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The use of contrast and non-contrast post-mortem computed tomography (PMCT) in coronial autopsy clinical practice: Results from an audit of 268 cases 对比和非对比尸检计算机断层扫描(PMCT)在冠状解剖临床实践中的应用:来自268例审计的结果
IF 1.2 4区 医学 Q3 MEDICINE, LEGAL Pub Date : 2025-12-23 DOI: 10.1016/j.jflm.2025.103056
Alexander Matthews , Yeafan Xi , Claire French , Nigel Cooper

Background

Little guidance exists on where post-mortem computed tomography with coronary angiography (PMCTA) may be advantageous compared with non-contrast post-mortem computed tomography (PMCT) alone. A large sample of post-mortem cases which utilised PMCT or PMCTA was analysed to elucidate any patterns in their respective use.

Methods

All cases referred to our department for post-mortem examination by His Majesty's (HM) Coroners across the 3-month period of December 2023, January 2024, and February 2024 were eligible for inclusion in this study. To be included, cases must have had PMCT or PMCTA prior to autopsy. Where autopsy was performed prior to the post-mortem cross-sectional imaging, these were excluded. Relevant information including age, co-morbidities, and peri-mortem history was retrospectively extracted from the respective post-mortem report for all included cases. Coronary artery calcification (CAC) score was also investigated for its ability to predict coronary artery disease as cause of death.

Results

A total of 268 cases were included and analysed. PMCTA was requested more frequently in patients aged 70 or over but offered useful information more often in patients under 70 (p < .001). Peri-mortem history and the presence of co-morbidities did not influence scan type requests (p > .05 in all factors tested). PMCTA may have added value by negating the need for invasive autopsy in 13/268 (4.9%) of cases. There was a moderately positive correlation between CAC score and radiologist reported degree of coronary artery stenosis on PMCTA (agreement in 82/114 cases, 71.9%; χ2 statistic = 21.86, p < .001; r = +0.33, p < .001).

Conclusions

There was extensive intra-departmental variation in scan type requests supporting coronial autopsies. There were limited patterns on which recommendations could be made for differential use of PMCTA and non-contrast PMCT going forward. In a significant number of cases PMCTA was able to add value by providing additional information which prevented the need for invasive autopsy. PMCTA may be more useful in those aged under 70 compared to those over 70. Using a CAC score threshold of >400 from PMCT alone could lead to overdiagnosis of coronary artery disease as cause of death.
背景:与单独的非对比尸检计算机断层扫描(PMCT)相比,尸检计算机断层扫描联合冠状动脉造影(PMCTA)在哪些方面具有优势,目前还没有什么指导。分析了大量使用PMCT或PMCTA的死后病例样本,以阐明它们各自使用的任何模式。方法2023年12月、2024年1月和2024年2月3个月期间,所有由英国验尸官转诊至我科进行尸检的病例均符合纳入本研究的条件。被纳入的病例必须在尸检前患有PMCT或PMCTA。如果尸检是在死后横断面成像之前进行的,这些被排除在外。相关信息包括年龄、合并症和死前病史,回顾性地从所有纳入病例的各自尸检报告中提取。冠状动脉钙化(CAC)评分也被用于预测冠状动脉疾病作为死亡原因的能力。结果共纳入分析268例。70岁及以上的患者更常要求PMCTA,但70岁以下的患者更常提供有用的信息(p < .001)。死前病史和合并症的存在不影响扫描类型要求(所有测试因素p >; 0.05)。在13/268(4.9%)的病例中,PMCTA可能具有附加价值,无需进行有创尸检。CAC评分与放射科医师在PMCTA上报告的冠状动脉狭窄程度呈正相关(82/114例,71.9%),χ2统计值= 21.86,p < .001; r = +0.33, p < 001)。结论支持冠状解剖的扫描类型要求存在广泛的部门内差异。对于今后PMCTA和非对照PMCT的区别使用,建议的模式有限。在相当数量的病例中,PMCTA能够通过提供额外的信息来增加价值,从而避免了侵入性尸检的需要。与70岁以上的人相比,PMCTA对70岁以下的人可能更有用。单独使用PMCT的CAC评分阈值>;400可能导致冠状动脉疾病作为死亡原因的过度诊断。
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引用次数: 0
Awareness of forensic odontology among Lebanese dentists: Implications for dental education and training 黎巴嫩牙医对法医牙科学的认识:对牙科教育和培训的影响。
IF 1.2 4区 医学 Q3 MEDICINE, LEGAL Pub Date : 2025-12-23 DOI: 10.1016/j.jflm.2025.103057
Maysaa Fakhro , Paul Nahas , Mohd Fadhli Khamis , Mohd Firdaus Yhaya , Kah Haw Chang
Forensic odontology is adapted worldwide as a primary method of identification in mass casualty incidents due to the durability of tooth enamel and dentin. They remain highly resistant to postmortem alterations caused by taphonomic and diagenetic processes. However, the awareness of forensic odontology among Lebanese dentists have received limited attention. Therefore, this study aims to investigate the practice of maintaining dental records and awareness on forensic odontology among Lebanese dentists. In this study, a total of 80 responses from Lebanese dentists were collected through a survey covering their background, prior training experience, dental documentation practice and awareness of forensic odontology. This study demonstrates that no significant linear relationship was observed between the scores in keeping dental records and the backgrounds and prior training of Lebanese dentists. Nonetheless, through multiple linear regression test, there were statistically significant linear relationships between the awareness on forensic odontology and two predictors, F (2, 77) = 17.690, p < 0.001, R2 = 0.570. An increase of 0.957 in the awareness score was observed with participation in forensic odontology training, while an 0.574 score increase was expected when participating in legal training. Hence, training on the knowledge and implications of forensic odontology shall be initiated by the Lebanese government, supported by proper maintenance of dental records for the preparedness of any possible mass disasters which could lead to severe consequences.
由于牙釉质和牙本质的耐久性,法医牙科学在世界范围内被用作大规模伤亡事件中鉴定的主要方法。它们对由埋藏学和成岩过程引起的死后改变具有高度的抵抗力。然而,黎巴嫩牙医对法医牙科学的认识受到的关注有限。因此,本研究旨在调查黎巴嫩牙医维护牙科记录的做法和对法医牙科学的认识。在这项研究中,通过调查收集了黎巴嫩牙医的80份回复,调查内容包括他们的背景、先前的培训经历、牙科文件实践和对法医牙科学的认识。本研究表明,没有显著的线性关系,在保持牙科记录和黎巴嫩牙医的背景和先前的培训得分之间观察到。但经多元线性回归检验,两项预测因子与法医牙科学认知程度呈显著线性关系,F (2,77) = 17.690, p 2 = 0.570。参加法医学培训的学生认知得分提高0.957分,参加法律培训的学生认知得分提高0.574分。因此,黎巴嫩政府应开始对法医牙科学的知识和影响进行培训,同时妥善保存牙科记录,以便为可能导致严重后果的任何大规模灾难做好准备。
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引用次数: 0
Intrinsic factors influencing the post-mortem mechanical excitability of human skeletal muscle 影响人体骨骼肌死后机械兴奋性的内在因素。
IF 1.2 4区 医学 Q3 MEDICINE, LEGAL Pub Date : 2025-12-22 DOI: 10.1016/j.jflm.2025.103055
H. Stigter, J. Kloosterman, T. Krap, W.L.J.M. Duijst
<div><h3>Background</h3><div>Post-mortem, supravital muscle reaction (SMR) of human skeletal muscle is dependent on energy supply. Intrinsic variables, like peri-mortem body temperature and underlying diseases, influence the rate of cell metabolism in skeletal muscle cells post-mortem, and thus the available energy for SMR.</div></div><div><h3>Objectives</h3><div>A field study was conducted, comprising deceased found under differing conditions. We investigated the influence of the body temperature of the deceased on the outcome of post-mortem mechanical stimulation of skeletal muscle in the first hours post-mortem. In addition, we investigated the influence of sex, age, state of rigor mortis and the length of the dying process on SMR. Furthermore, we hypothesized that the outcome of post-mortem muscle stimulation could differ between musculus biceps brachii (MBB) and the musculus brachioradialis (MBR) on the same body examined at the same time, due to a higher cooling velocity of more peripheral located skeletal muscles (MBR).</div></div><div><h3>Methods</h3><div>In the period of January 2017 to August 2023 four forensic physicians from two different regions in the Netherlands performed mechanical stimulation of both upper and forearms of deceased with a known or an estimated PMI of <14 h, by using a reflex hammer. The research population concerned in-hospital-deaths, out-of-hospital deaths that were transferred to the morgue of a hospital, and out-of-hospital deaths that were examined at the place where the body was found. The sex and age of the deceased, body temperature, and state of rigor mortis were registered in the Dutch national register of forensic medicine, which was used as a data resource. The length of the dying process was registered separately using SPSS 27.0 which also served as a data resource. The Welch Two Sample <em>t</em>-test, chi-squared test, logistic regression and multiple logistic regression were performed to investigate the influence of the PMI, body temperature, sex, age, state of rigor mortis and the length of the dying process on the outcome of SMR. Statistical analyses were performed by using R 4.4.1. Significance was accepted at P < 0.05.</div></div><div><h3>Results</h3><div>In total, 142 cases were included, in which musculus biceps brachii (MBB) and the musculus brachioradialis (MBR) on both arms were mechanically stimulated with a reflex hammer. The population consisted out of 65 males (mean age: 73.4 ± 16.8 years) and 77 females (mean age: 82.1 ± 13.0 years). SMR was present in 74 out of 142 cases (52.1 %). The mean PMI did not differ significantly between cases with a positive SMR (157.3 min) and cases showing no SMR (168.4 min). The number of male cases that showed SMR (63.1 %) was significantly higher than the number of female cases (42.9 %) that showed SMR. No relationship was detected between age, body temperature, rigor mortis and the length of the dying process, and the outcome of post-mortem musc
背景:人死后,骨骼肌的上肌反应(SMR)依赖于能量供应。内在变量,如死前体温和潜在疾病,会影响死后骨骼肌细胞的细胞代谢率,从而影响SMR的可用能量。目的:进行实地研究,包括在不同条件下发现的死者。我们研究了死者体温对死后几个小时内骨骼肌机械刺激结果的影响。此外,我们还调查了性别、年龄、尸僵状态和死亡过程长度对SMR的影响。此外,我们假设死后肌肉刺激的结果可能会在同一身体上的肱二头肌(MBB)和肱桡肌(MBR)之间有所不同,因为更多的外围骨骼肌(MBR)的冷却速度更高。方法:在2017年1月至2023年8月期间,来自荷兰两个不同地区的四名法医对已知或估计PMI的死者的上臂和前臂进行机械刺激。结果:共纳入142例,其中用反射锤机械刺激双臂肱二头肌(MBB)和肱桡肌(MBR)。男性65例,平均年龄73.4±16.8岁;女性77例,平均年龄82.1±13.0岁。142例中有74例(52.1%)出现SMR。SMR阳性病例(157.3 min)和无SMR病例(168.4 min)的平均PMI无显著差异。男性出现SMR的病例数(63.1%)明显高于女性(42.9%)。年龄、体温、尸僵程度、死亡过程长度与死后早期肌肉刺激的结果没有关系。在142例病例中,有28例(19.7%)在同一身体上观察到MBB和MBR在死后肌肉刺激结果上的差异。在尸僵的连续阶段,SMR的百分比下降。在尸体完全僵直的情况下,没有观察到SMR。结论:目前的研究表明,男性和女性死者死后早期的死后肌肉刺激结果有显著差异。未发现体温、年龄、尸僵程度和死亡过程长度对死后早期肌肉刺激的结果有影响,但由于研究的局限性,必须谨慎对待这一结果。在19.7%的病例中,在同一身体上MBB和MBR之间观察到死后肌肉刺激结果的差异。
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引用次数: 0
Histopathological study for dating of Subdural haemorrhage and Subarachnoid haemorrhage in a single cohort study of head injury 脑损伤单队列研究中硬膜下出血和蛛网膜下出血时间的组织病理学研究。
IF 1.2 4区 医学 Q3 MEDICINE, LEGAL Pub Date : 2025-12-19 DOI: 10.1016/j.jflm.2025.103039
Sangita Moirangthem , Jayanthi Yadav , Jai Kumar Chaurasia , Johann Aibantyllilang Blah , Arun Kori , Leena Lokhande , Abarnna Sree

Objective and background

Head injury leading to meningeal haemorrhages, including subdural haemorrhage (SDH) and subarachnoid haemorrhage (SAH), is a major cause of morbidity and mortality in traumatic deaths. Determining the cause, mechanism, and dating of injury is crucial for forensic investigations. Histopathological examination plays a key role in accurately dating the injury from meningeal haemorrhages, which is essential for medicolegal investigation and the determination of the timeline of events. This study aims to evaluate histopathological changes in SDH and SAH in head injury cases and correlate them with post-traumatic survival time.

Materials and methods

This cross-sectional study was conducted at the Department of Forensic Medicine and Toxicology, AIIMS, Bhopal. A total of 63 medicolegal autopsy cases of head injury having both SDH and SAH were examined with known time of injury, and time since death within 24 h, excluding decomposed cases and individuals with underlying pathological conditions that could influence haemorrhagic patterns. Collected samples were processed according to standard protocol and stained with hematoxylin and eosin. Histopathological findings, including haemorrhage, fibrin deposition, fibroblast proliferation, inflammatory cell infiltration, neovascularisation, and cell layer formation, were analysed and statistically evaluated using SPSS software.

Observations, findings, and discussion

The shortest post-traumatic survival time recorded was within 1 h, and the longest was 40 days. In SDH cases, fibrin and neutrophils were observed within 24 h, while macrophages and inflammatory cells appeared by day 3. Neovascularisation and cell layer formation were noted from day 4 onward, becoming more pronounced with longer survival times. In SAH, haemorrhage and neutrophils were present within the first 24 h, macrophages appeared by day 2, and neovascularisation and multiple cell layers were observed from day 4, becoming more prominent with increased duration of post-traumatic survival time. Histological dating of haemorrhages correlated significantly with post-traumatic survival time.
Histopathological examination serves as a critical forensic tool for accurately dating meningeal haemorrhages. By analysing both SDH and SAH in the same cases, this study provides novel evidence that strengthens the reliability of histology in distinguishing traumatic from pathological haemorrhage and in reconstructing timelines for medicolegal investigations.
目的和背景:头部损伤导致脑膜出血,包括硬膜下出血(SDH)和蛛网膜下出血(SAH),是创伤性死亡中发病率和死亡率的主要原因。确定损伤的原因、机制和时间对法医调查至关重要。组织病理学检查在准确确定脑膜出血损伤日期方面起着关键作用,这对医学调查和确定事件时间至关重要。本研究旨在评估脑损伤患者SDH和SAH的组织病理学变化,并将其与创伤后生存时间联系起来。材料和方法:本横断面研究在博帕尔AIIMS法医学和毒理学部门进行。共有63例同时患有SDH和SAH的头部损伤的法医尸检病例进行了检查,已知的损伤时间和死亡时间在24小时内,排除了分解病例和可能影响出血模式的潜在病理条件的个体。采集的样品按标准方案处理,并用苏木精和伊红染色。使用SPSS软件对出血、纤维蛋白沉积、成纤维细胞增殖、炎症细胞浸润、新生血管形成、细胞层形成等组织病理学结果进行分析和统计评价。观察、发现及讨论:记录的创伤后生存时间最短为1小时,最长为40天。SDH患者24 h内出现纤维蛋白和中性粒细胞,第3天出现巨噬细胞和炎症细胞。新生血管和细胞层的形成从第4天开始,随着存活时间的延长,新生血管和细胞层的形成更加明显。在SAH中,出血和中性粒细胞出现在最初的24小时内,巨噬细胞出现在第2天,从第4天开始观察到新生血管和多细胞层,随着创伤后生存时间的延长而变得更加突出。出血的组织学日期与创伤后生存时间显著相关。组织病理学检查是准确确定脑膜出血日期的重要法医工具。通过分析同一病例中的SDH和SAH,本研究提供了新的证据,加强了组织学在区分创伤性出血和病理性出血方面的可靠性,并为法医调查重建了时间线。
{"title":"Histopathological study for dating of Subdural haemorrhage and Subarachnoid haemorrhage in a single cohort study of head injury","authors":"Sangita Moirangthem ,&nbsp;Jayanthi Yadav ,&nbsp;Jai Kumar Chaurasia ,&nbsp;Johann Aibantyllilang Blah ,&nbsp;Arun Kori ,&nbsp;Leena Lokhande ,&nbsp;Abarnna Sree","doi":"10.1016/j.jflm.2025.103039","DOIUrl":"10.1016/j.jflm.2025.103039","url":null,"abstract":"<div><h3>Objective and background</h3><div>Head injury leading to meningeal haemorrhages, including subdural haemorrhage (SDH) and subarachnoid haemorrhage (SAH), is a major cause of morbidity and mortality in traumatic deaths. Determining the cause, mechanism, and dating of injury is crucial for forensic investigations. Histopathological examination plays a key role in accurately dating the injury from meningeal haemorrhages, which is essential for medicolegal investigation and the determination of the timeline of events. This study aims to evaluate histopathological changes in SDH and SAH in head injury cases and correlate them with post-traumatic survival time.</div></div><div><h3>Materials and methods</h3><div>This cross-sectional study was conducted at the Department of Forensic Medicine and Toxicology, AIIMS, Bhopal. A total of 63 medicolegal autopsy cases of head injury having both SDH and SAH were examined with known time of injury, and time since death within 24 h, excluding decomposed cases and individuals with underlying pathological conditions that could influence haemorrhagic patterns. Collected samples were processed according to standard protocol and stained with hematoxylin and eosin. Histopathological findings, including haemorrhage, fibrin deposition, fibroblast proliferation, inflammatory cell infiltration, neovascularisation, and cell layer formation, were analysed and statistically evaluated using SPSS software.</div></div><div><h3>Observations, findings, and discussion</h3><div>The shortest post-traumatic survival time recorded was within 1 h, and the longest was 40 days. In SDH cases, fibrin and neutrophils were observed within 24 h, while macrophages and inflammatory cells appeared by day 3. Neovascularisation and cell layer formation were noted from day 4 onward, becoming more pronounced with longer survival times. In SAH, haemorrhage and neutrophils were present within the first 24 h, macrophages appeared by day 2, and neovascularisation and multiple cell layers were observed from day 4, becoming more prominent with increased duration of post-traumatic survival time. Histological dating of haemorrhages correlated significantly with post-traumatic survival time.</div><div>Histopathological examination serves as a critical forensic tool for accurately dating meningeal haemorrhages. By analysing both SDH and SAH in the same cases, this study provides novel evidence that strengthens the reliability of histology in distinguishing traumatic from pathological haemorrhage and in reconstructing timelines for medicolegal investigations.</div></div>","PeriodicalId":16098,"journal":{"name":"Journal of forensic and legal medicine","volume":"117 ","pages":"Article 103039"},"PeriodicalIF":1.2,"publicationDate":"2025-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145822532","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Sexual violence and associated factors among female night students in Ethiopia: A systematic review and meta-analysis 埃塞俄比亚女夜校学生的性暴力及其相关因素:系统回顾和荟萃分析
IF 1.2 4区 医学 Q3 MEDICINE, LEGAL Pub Date : 2025-12-18 DOI: 10.1016/j.jflm.2025.103053
Yeshiwas Ayale Ferede , Worku Chekol Tassew , Melese Legesse Mitku , Abiyie Demelash Gashe , Girum Meseret Ayenew , Adane Nigussie , Agerie Mengistie Zeleke

Background

Despite numerous efforts to prevent and control sexual violence in Ethiopia, the incidence continues to rise. It's crucial to have solid evidence to highlight the severity of the issue. Thus, this study aims to determine the overall prevalence of sexual violence and pinpoint the contributing factors among female night students in Ethiopia.

Method

A comprehensive and systematic literature search was conducted across various electronic databases, including PubMed, HINARI, Scopus, EMBASE, Web of Science, African Journal online (AJOL), and Google Scholar. The quality of the studies was evaluated using the Joanna Briggs Institute (JBI) critical appraisal checklist for analytical cross-sectional studies, consisting of nine criteria. The heterogeneity of the studies was assessed using the Cochrane Q and I2 test statistics. The pooled prevalence estimate of sexual violence among female night students was calculated using a random-effects model.

Result

Out of 6410 studies reviewed, six studies involving 2699 night students were deemed relevant. The pooled estimate of sexual violence among female night students in Ethiopia was found to be 43.58 % (95 % CI: 30.68, 56.48). Factors associated with sexual violence included rural residency (POR = 2.51; 95 % CI: 1.17, 5.41), alcohol use (AOR = 3.30; 95 % CI: 1.68, 6.48), having multiple sexual partners (POR = 2.78; 95 % CI: 1.97, 3.92), and a commute time to school exceeding 20 min (POR = 1.74; 95 % CI: 1.18, 2.58).

Conclusion

The research revealed that nearly half of female night students encountered sexual violence, with significant correlations identified between this violence and factors such as having multiple sexual partners, residing in rural areas during childhood, having a commute time to school of over 20 min, and having a history of alcohol use. To effectively address and prevent sexual violence, the Federal Ministry of Health (FMOH), policymakers, and stakeholders must prioritize these findings and take targeted actions.
尽管埃塞俄比亚为预防和控制性暴力做出了许多努力,但发生率仍在上升。有确凿的证据来强调问题的严重性是至关重要的。因此,本研究旨在确定埃塞俄比亚女夜校学生中性暴力的总体流行程度,并查明其影响因素。方法在PubMed、HINARI、Scopus、EMBASE、Web of Science、African Journal online (AJOL)和b谷歌Scholar等电子数据库中进行全面系统的文献检索。研究的质量使用乔安娜布里格斯研究所(JBI)对分析性横断面研究的关键评估清单进行评估,包括9个标准。采用Cochrane Q和I2检验统计量评估研究的异质性。利用随机效应模型计算了女夜校学生中性暴力的综合发生率。结果在6410项研究中,6项涉及2699名夜校学生的研究被认为是相关的。埃塞俄比亚女夜校学生的性暴力汇总估计为43.58% (95% CI: 30.68, 56.48)。与性暴力相关的因素包括农村居住(POR = 2.51; 95% CI: 1.17, 5.41)、饮酒(AOR = 3.30; 95% CI: 1.68, 6.48)、拥有多性伴侣(POR = 2.78; 95% CI: 1.97, 3.92)以及上学通勤时间超过20分钟(POR = 1.74; 95% CI: 1.18, 2.58)。研究表明,近一半的女夜校学生遭遇过性暴力,这种暴力与拥有多个性伴侣、童年时期居住在农村地区、上学通勤时间超过20分钟、有酗酒史等因素存在显著相关性。为了有效处理和预防性暴力,联邦卫生部、决策者和利益攸关方必须优先考虑这些调查结果,并采取有针对性的行动。
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引用次数: 0
Forensic and clinical insights into the eshmun complex: A case of scrotal self-mutilation with phenol in a gender dysphoric individual 埃什蒙情结的法医和临床见解:一个性别焦虑个体用苯酚自残阴囊的案例
IF 1.2 4区 医学 Q3 MEDICINE, LEGAL Pub Date : 2025-12-18 DOI: 10.1016/j.jflm.2025.103054
Harshal R. Thube, V.J. Jishnu
The Eshmun complex is a term coined to describe self-genital mutilation or auto-castration under psychiatric disorders. Self-mutilation of the genitals can be an unfortunate outcome of different delusional beliefs regarding belonging to another gender or chronic substance abuse leading to self-harm. The result can be a minor injury or an adverse event, such as a fatality. In either case, the patient should undergo a medical and detailed psychiatric evaluation and counseling.
We describe a case involving a 24-year-old man who arrived at the hospital's emergency department. With an alleged history of self-instillation of a household cleaning liquid containing phenol into the scrotum using a needle and syringe. Upon examination of the injured region, a puncture wound was discovered in the left testicle, accompanied by a noticeable buildup of fluid. A short psychological examination revealed his desire for a sex change and a previous attempt at self-genital mutilation.
“埃什蒙情结”是一个用来描述精神疾病导致的自我生殖器切割或自我阉割的术语。生殖器自残可能是关于属于另一性别的不同妄想信念或长期滥用药物导致自残的不幸结果。其结果可能是轻伤或不良事件,如死亡。在任何一种情况下,患者都应该接受医疗和详细的精神评估和咨询。我们描述了一个病例,涉及一名24岁的男子,他被送到医院的急诊科。涉嫌使用针头和注射器将含有苯酚的家用清洗液自行注入阴囊。在检查受伤部位时,发现左侧睾丸有一个穿刺伤口,并伴有明显的积液。一项简短的心理检查显示,他有变性的愿望,之前曾试图切割自己的生殖器官。
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引用次数: 0
Retrospective analysis of clinical toxicology results from 2017 to 2023: exploring the characteristics and prevalence trends of detected drugs and poisons 回顾性分析2017 - 2023年临床毒理学结果:探讨检出药物和毒物的特点及流行趋势
IF 1.2 4区 医学 Q3 MEDICINE, LEGAL Pub Date : 2025-12-13 DOI: 10.1016/j.jflm.2025.103052
Yuxuan Fu , Sujing Zhang , Yibo Yan , Ping Xiang , Jian Li , Lei Xin , Hongxiao Deng , Hejian Wu , Xin Wang
To characterize temporal trends in toxic substance patterns involved in clinical toxicology cases in Shanghai, while considering regulatory changes, and to benchmark these findings against data from other regions. The clinical toxicology results reported by the Academy of Forensic Science (AFS) from January 2017 to December 2023 were collated, summarized, and retrospectively analyzed for the types and blood concentrations of different drugs and poisons. Overall, 4422 clinical toxicology cases were recorded, accounting for an average of approximately 630 cases per year, with 62 % presenting positive results. The positively detected substances were mainly clinical drugs and pesticides. The detected clinical drugs were predominantly sedative-hypnotics, antidepressants, and antipsychotics. Estazolam (n = 347), midazolam (n = 272), bromadiolone (n = 265), clonazepam (n = 228), and quetiapine (n = 199) were the top five most frequently detected substances in clinical toxicological cases. Other cases related to plant poisons, toxic heavy metals, and toxic alcohols were also recorded. The blood concentrations of the various drugs showed significant variability. This study highlights a concerning rise in psychoactive drug use, particularly sedative-hypnotics and antidepressants, reflecting a growing mental health burden in the population. This pattern is further supported by the frequent detection of blood drug concentrations exceeding therapeutic upper limits, indicating widespread non-therapeutic exposure. In response, psychotropic drug prescribing practices must be comprehensively strengthened through stricter regulations and the establishment of prescription surveillance to ensure rational and safe medication use. Additionally, a decline in certain toxicants, such as paraquat, suggests the effectiveness of policy interventions. The findings also emphasize the risks of polypharmacy and the need for enhanced poisoning prevention and emergency response systems.
在考虑监管变化的情况下,分析上海临床毒理学病例中涉及的有毒物质模式的时间趋势,并将这些发现与其他地区的数据进行比较。对法医学科学院(AFS) 2017年1月至2023年12月报告的临床毒理学结果进行整理、总结,并对不同药物和毒物的类型和血药浓度进行回顾性分析。总体而言,共记录了4422例临床毒理学病例,平均每年约630例,其中62%呈阳性结果。阳性物质主要为临床用药和农药。临床检出的药物以镇静催眠药、抗抑郁药和抗精神病药为主。艾司唑仑(347例)、咪达唑仑(272例)、溴代洛酮(265例)、氯硝西泮(228例)、喹硫平(199例)是临床毒理学病例中检出频率最高的5种物质。其他与植物中毒、有毒重金属和有毒酒精有关的案件也有记录。不同药物的血药浓度表现出显著的差异。这项研究强调了精神活性药物使用的增加,特别是镇静催眠药和抗抑郁药,反映了人口中日益增长的精神健康负担。血液中药物浓度超过治疗上限的频繁检测进一步支持了这种模式,表明广泛的非治疗性暴露。为此,必须通过更严格的法规和建立处方监督来全面加强精神药物的处方实践,以确保合理和安全用药。此外,某些有毒物质如百草枯的减少表明政策干预的有效性。研究结果还强调了多种用药的风险以及加强中毒预防和应急响应系统的必要性。
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引用次数: 0
Semi-supervised learning with dynamic classifier selection for PMI estimation: An animal study 半监督学习与动态分类器选择PMI估计:一项动物研究。
IF 1.2 4区 医学 Q3 MEDICINE, LEGAL Pub Date : 2025-12-13 DOI: 10.1016/j.jflm.2025.103051
Jian Li , Yan-juan Wu , Xing-yu Lu , Shu-rui Zhang , Na Li , Qiu-xiang Du , Jie Cao , Ru-feng Bai , Jun-hong Sun
The application of machine learning in analyzing postmortem molecular alterations represents a promising strategy for estimating the Postmortem Interval (PMI), yet samples with undetermined PMI significantly compromise model efficacy and compound the existing scarcity of forensically viable samples. The generalization ability of the model is significantly impaired by the insufficient effective sample size, which greatly hinders the widespread application of PMI estimation based on machine learning. Semi-supervised learning (SSL) methods can effectively leverage both labeled samples with known PMI and unlabeled samples with unknown PMI to jointly train models. This approach is crucial for enhancing sample utilization and improving the accuracy of PMI estimation. In this study, we examined skeletal muscle from rats at different PMI. Using both labeled and unmarked PMI samples, we evaluated the efficacy of Supervised Learning (SL) and SSL models in addressing the prevalent challenge of PMI estimation within forensic science. On this basis, we employed the dynamic classifier selection (DCS) strategy to enhance the construction process of both SL and SSL models. The findings demonstrate that SSL-DCS significantly enhances the predictive efficacy of PMI compared to SL-DCS, exhibiting an area under receiver operating characteristic curve (AUC) of 0.89 and an R2 of 0.93 for time to death from 0 to 9 days. The outcomes of this study suggest that SSL-DCS not only enhances prediction efficacy but also improves the utilization rate of scarce samples, which would serve as a paradigm that can be extended and applied to other biomedical domains.
机器学习在分析死后分子变化中的应用代表了估计死后间隔(PMI)的一种很有前途的策略,但PMI未确定的样本会显著损害模型的有效性,并使现有法医可行样本的稀缺性复杂化。有效样本量不足严重影响了模型的泛化能力,极大地阻碍了基于机器学习的PMI估计的广泛应用。半监督学习(SSL)方法可以有效地利用PMI已知的标记样本和PMI未知的未标记样本来联合训练模型。这种方法对于提高样本利用率和提高PMI估计的准确性至关重要。在这项研究中,我们检查了不同PMI大鼠的骨骼肌。使用标记和未标记的PMI样本,我们评估了监督学习(SL)和SSL模型在解决法医科学中普遍存在的PMI估计挑战方面的有效性。在此基础上,我们采用了动态分类器选择(DCS)策略来增强SL和SSL模型的构建过程。结果表明,与SL-DCS相比,SL-DCS显著提高了PMI的预测效果,0 - 9天死亡时间的受试者工作特征曲线下面积(AUC)为0.89,R2为0.93。本研究结果表明,SSL-DCS不仅提高了预测效果,而且提高了稀缺样本的利用率,为其他生物医学领域的推广和应用提供了一个范例。
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引用次数: 0
Impact of psychoactive substances and attention-related impairments on driving performance: Sex differences and road crash involvement 精神活性物质和注意力相关障碍对驾驶表现的影响:性别差异和道路交通事故参与。
IF 1.2 4区 医学 Q3 MEDICINE, LEGAL Pub Date : 2025-12-12 DOI: 10.1016/j.jflm.2025.103050
Claudio Terranova , Clara Cestonaro , Stefano Palumbi , Laura Marino , Alessandro Gentili , Francesco Pozzebon , Rocco Miazzi , Anna Aprile

Introduction

Crashes are a global public health concern, with psychoactive substance use and attention impairments potentially increasing risk and affecting male and female drivers differently. This study aims to identify factors related to psychoactive substance use and attention impairments that predict road crash involvement by sex, offering insights for targeted prevention effort.

Methods

This observational study examined individuals assessed for driving license reissuance after driving under the influence of alcohol and/or drugs. Data collected included personal and sociodemographic details, results from a Continuous performance test (CPT-3) (a neuropsychological test assessing inattentiveness, impulsivity, sustained attention, and vigilance), and toxicological analyses of biological samples. Statistical analyses (chi-square, logistic regression, and ROC curve) aimed at identifing sex-specific predictors of road crash involvement.

Results

The study included 169 participants (82.8 % males, 17.2 % females). Initial univariate analyses indicated sex differences that were not confirmed after Bonferroni correction for multiple comparisons. Logistic regression found blood alcohol concentration predictive of crashes in males (p = 0.005, OR = 2.52), while inattentiveness was a major factor for females (p = 0.045, OR = 12.0). In the combined model, sex itself was not an independent predictor after adjusting for these factors. The model showed moderate accuracy for males (ROC-AUC = 0.695) and higher accuracy for females (ROC-AUC = 0.816), suggesting that inattentiveness may play a particularly important role in predicting crashes in the female subgroup.

Conclusions

Inattentiveness and alcohol use emerged as key predictors of crash involvement, with inattentiveness showing particular relevance in the female subgroup. Prevention should focus on modifiable risk factors rather than sex. The model's higher accuracy in females suggests attentional measures may help identify at-risk drivers, though the small female sample limits generalizability.
导言:车祸是一个全球性的公共卫生问题,精神活性物质的使用和注意力障碍可能增加风险,对男性和女性司机的影响不同。本研究旨在确定与精神活性物质使用和注意力障碍相关的因素,这些因素可以预测性别道路交通事故的发生,为有针对性的预防工作提供见解。方法:本观察性研究调查了在酒精和/或药物影响下驾驶后被评估补发驾照的个体。收集的数据包括个人和社会人口学细节,持续表现测试(CPT-3)(一种评估注意力不集中、冲动、持续注意力和警惕性的神经心理学测试)的结果,以及生物样本的毒理学分析。统计分析(卡方、逻辑回归和ROC曲线)旨在确定道路交通事故涉及的性别特异性预测因子。结果:研究纳入169名参与者(男性82.8%,女性17.2%)。最初的单变量分析表明,在Bonferroni校正多重比较后,性别差异未得到证实。Logistic回归发现血液酒精浓度可预测男性的撞车(p = 0.005, OR = 2.52),而注意力不集中是女性的主要因素(p = 0.045, OR = 12.0)。在综合模型中,在调整了这些因素后,性别本身并不是一个独立的预测因子。该模型显示,男性的准确度中等(ROC-AUC = 0.695),女性的准确度较高(ROC-AUC = 0.816),这表明注意力不集中可能在预测女性亚组的撞车事故中起着特别重要的作用。结论:注意力不集中和饮酒是导致车祸的关键因素,其中注意力不集中在女性亚组中表现出特别的相关性。预防应侧重于可改变的危险因素,而不是性别。该模型在女性中的较高准确性表明,注意力测量可能有助于识别有风险的驱动因素,尽管女性样本较少限制了普遍性。
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引用次数: 0
Alcohol-impaired driving in Tunisia: Forensic insights and population-level data for North African public health and road safety 突尼斯酒后驾驶:北非公共卫生和道路安全的法医见解和人口数据
IF 1.2 4区 医学 Q3 MEDICINE, LEGAL Pub Date : 2025-12-09 DOI: 10.1016/j.jflm.2025.103049
Omar Smaoui , Bilel Moslah , Mohamed Anouar Nouioui , Cyrine Messaoud , Nessrine Ben Haj Yahya , Dorra Amira

Aims

Alcohol abuse remains a significant global public health challenge contributing to road accidents, chronic diseases, and social issues. In Tunisia, limited data on alcohol consumption trends among drivers and accident victims prompted this forensic study, which analyzed blood samples from 2068 individuals detained during roadside checks or involved in road accidents over five years (2019–2023).

Methods

This study used semi-quantitative immunoassay screening to assess alcohol prevalence and demographic patterns.

Results

The results revealed an 82.5 % positivity rate for blood alcohol concentration (BAC) exceeding the legal limit of 0.3 g/L, with a strong male predominance (97.8 %) and a majority of cases in the 20–35 age group (51.1 %). Alcohol consumption was most prevalent among manual laborers (48.2 %) and urban residents, particularly in Tunis (52.3 %). The study also identified seasonal peaks in alcohol-related arrests and highlighted the risks associated with various BAC levels, from minor impairments at 0.3–0.5 g/L to severe intoxication at levels above 1.5 g/L.

Conclusions

These findings provide the first systematic forensic evidence on alcohol-impaired driving in Tunisia. To our knowledge, this research work provides, for the first time, data on the prevalence and patterns of alcohol use in an African country based on large-scale forensic analysis. This potentially represents an important case study for comparison with other continental regions, particularly Europe and the northern Mediterranean. Furthermore, such analysis has highlighted differences in substance use trends in a comparative case study of the European Neighbourhood and Southern countries, helping to adjust and adapt prevention and harm reduction strategies to regional realities.
酒精滥用仍然是一个重大的全球公共卫生挑战,导致道路事故、慢性病和社会问题。在突尼斯,关于司机和事故受害者的酒精消费趋势的数据有限,促使了这项法医研究,该研究分析了五年内(2019-2023年)在路边检查期间被拘留或涉及道路事故的2068人的血液样本。方法本研究采用半定量免疫分析法筛查,评估酒精患病率和人口统计学模式。结果血酒精浓度(BAC)超过法定限0.3 g/L阳性率为82.5%,男性居多(97.8%),以20 ~ 35岁年龄组居多(51.1%)。酒精消费在体力劳动者(48.2%)和城市居民中最为普遍,尤其是在突尼斯(52.3%)。该研究还确定了与酒精相关的逮捕的季节性高峰,并强调了与不同BAC水平相关的风险,从0.3-0.5 g/L的轻微损伤到高于1.5 g/L的严重中毒。这些发现为突尼斯的酒后驾驶提供了第一个系统的法医证据。据我们所知,这项研究工作首次在大规模法医分析的基础上提供了关于非洲国家酒精使用流行程度和模式的数据。这可能是与其他大陆区域,特别是欧洲和地中海北部进行比较的重要案例研究。此外,这种分析突出了欧洲邻国和南方国家的比较案例研究中药物使用趋势的差异,有助于根据区域现实调整和调整预防和减少危害战略。
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引用次数: 0
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Journal of forensic and legal medicine
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