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Hot Cross Bun Sign- A Case Series 热十字包标志-案例系列
Pub Date : 2021-06-30 DOI: 10.3126/njr.v11i1.37172
Sasikumar Sheetal, Reji Thomas
Multiple system atrophy (MSA) is an adult onset, sporadic, progressive neurodegenerative disorder. It is an alpha synucleinopathy and the presentations include parkinsonism, cerebellar ataxia and autonomic symptoms in varying combinations. The two clinical phenotypes recognized are parkinsonian variant (MSA-P) and the cerebellar variant (MSA-C). Since many of the clinical features overlap with Parkninson’s disease, it is often misdiagnosed as Parkinson’s disease in the early stages. Since MSA is a progressive disorder with poor prognosis, it is important for the treating physician to recognize this entity and provide prognostication. MRI brain may help in differentiating between these two and an important radiological sign in MSA-c is the ‘Hot cross bun’ sign. It refers to the cruciform T2 hyperintense signal on axial magnetic resonance imaging (MRI) of the pons. We hereby report two patients who presented with progressive slowness in waking, ataxia, pyramidal signs and orthostatic hypotension, whose MRI brain showed the characteristic hot cross bun sign.  
多系统萎缩(MSA)是一种成人发病、散发、进行性神经退行性疾病。它是一种α突触核蛋白病,表现包括帕金森病、小脑性共济失调和不同组合的自主神经症状。公认的两种临床表型是帕金森变体(MSA-P)和小脑变体(MSA-C)。由于许多临床特征与帕金森病重叠,在早期常被误诊为帕金森病。由于MSA是一种进行性疾病,预后较差,因此治疗医生认识到这种疾病并提供预后是很重要的。脑MRI可能有助于区分这两者,MSA-c中一个重要的影像学征象是“热十字包”征象。它是指脑桥轴向磁共振成像(MRI)上的十字形T2高信号。我们在此报告2例患者,其表现为进行性清醒缓慢,共济失调,锥体征和直立性低血压,其MRI脑显示特征性的热十字包征。
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引用次数: 0
Beyond Radiology Training 放射学培训之外
Pub Date : 2021-06-30 DOI: 10.3126/njr.v11i1.40468
B. R. Joshi
N/A
N/A
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引用次数: 0
Pitfalls in breast ultrasound 乳腺超声检查的误区
Pub Date : 2021-06-30 DOI: 10.3126/njr.v11i1.36510
B. R. Joshi
The pitfalls associated with breast sonography are important to recognize because these may prompt biopsy of a benign lesion or result in failure to recognize a breast cancer.. The important categories of pitfalls are anatomical, technical and professional. The true cause of pseudo lesions is more evident at real time imaging. Appropriate machine setting, knowledge of breast anatomy and scanning in two planes is essential. 
认识到与乳腺超声检查相关的陷阱是很重要的,因为这些陷阱可能促使良性病变活检或导致无法识别乳腺癌。陷阱的重要类别是解剖学、技术性和专业性。假性病变的真正原因在实时成像中更为明显。适当的机器设置,乳房解剖和两平面扫描的知识是必不可少的。
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引用次数: 0
Evaluation of variation of portal vein branching pattern on Multidetector Computed Tomography in adult population 成人门静脉多探头ct分支形态变化的评价
Pub Date : 2021-06-30 DOI: 10.3126/njr.v11i1.35533
K. Adhikari, K. Devkota, Sapana Koirala
Introduction: The main aim of this study was to determine the prevalence of main and right portal vein variation in study population and evaluate their branching patterns on abdominal CT.Methods: A hospital based cross sectional study was carried out in Department of Radiology, BPKIHS over a period of 6 months after taking ethical approval from institutional review committee. 375 cases referred for abdominal CT for various indications were included in the study.Results: Classic main portal vein branching pattern (Type 1) was identified in 305 (81.3%) cases. Main portal vein branching variations were identified in 70 (18.7 %) cases of which most common variation was trifurcation pattern (Type 2) seen in 48 (12.8%) cases followed by  right posterior portal vein as first branch of main portal vein (Type 3) seen in 21 (5.6%) cases. Out of 305 cases with Type 1 branching pattern, classic branching pattern of right portal vein was noted in 285 (93.4%) cases. Right portal vein variations were identified in 20 (6.5%) cases. Common variations of right portal vein noted in our study were early origin of segment VlI branch from right portal vein seen in 5 cases (1.6%), early origin of segment VI branch from right portal vein seen in 4 (1.3%) cases and quadrifurcation pattern seen in 3 cases (0.98%).Conclusion:  Prevalence of portal vein variations is high on routine abdominal CT scans. Knowledge about branching patterns of these variations can be useful to reduce liver injury and complications during hepatic surgeries and interventions. 
简介:本研究的主要目的是确定研究人群中主、右门静脉变异的患病率,并评估其在腹部CT上的分支模式。方法:在获得机构审查委员会的伦理批准后,在BPKIHS放射科进行为期6个月的以医院为基础的横断面研究。本研究纳入了375例因各种适应症接受腹部CT检查的病例。结果:305例(81.3%)发现典型门静脉主分支型(1型)。门静脉主干分支变异70例(18.7%),其中以三分型(2型)48例(12.8%)最为常见,其次为右门静脉后支为门静脉主干的第一分支(3型)21例(5.6%)。305例1型分支型患者中,右侧门静脉典型分支型285例(93.4%)。右侧门静脉病变20例(6.5%)。本研究中常见的右门静脉变异为:VlI段早期起源于右门静脉5例(1.6%),VI段早期起源于右门静脉4例(1.3%),四分形3例(0.98%)。结论:门静脉变异在常规腹部CT扫描中的发生率较高。了解这些变异的分支模式有助于在肝脏手术和干预期间减少肝损伤和并发症。
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引用次数: 0
Castleman Disease: A case report Castleman病1例报告
Pub Date : 2021-06-30 DOI: 10.3126/njr.v11i1.37067
S. Jha, A. Jha, D. Regmi, U. Bhatta, Goody Jha
Castleman disease (CD) is a group of lymphoproliferative disorders with common lymph node histological features. It may be either unicentric or multicentric. Unicentric Castleman disease (UCD) is localized and carries an excellent prognosis, whereas multicentric Castleman disease (MCD) is a systemic disease occurring most commonly in the setting of HIV infection and is associated with human herpesvirus 8.1Castleman disease in the abdomen and pelvis is rare and liable to misdiagnosis, but its characteristic imaging features can help in the diagnosis and differential diagnosis.2Unicentric Castleman disease (UCD) is rare, and there are no reliable estimates of its incidence in the population. While UCD can occur at any age, it is generally a disease of younger adults. The median age at presentation is approximately 35 years.3, 4
Castleman病(CD)是一组具有共同淋巴结组织学特征的淋巴增生性疾病。它可以是单中心的,也可以是多中心的。单中心Castleman病(UCD)是局部的,预后良好,而多中心Castleman病(MCD)是一种全身性疾病,最常见于HIV感染,与人类疱疹病毒相关。腹部和骨盆的Castleman病罕见,易误诊,但其特有的影像学特征有助于诊断和鉴别诊断。单中心Castleman病(UCD)是罕见的,没有可靠的估计其在人群中的发病率。虽然UCD可以发生在任何年龄,但它通常是年轻人的疾病。发病时的中位年龄约为35岁。3、4
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引用次数: 0
Assessment of Chance fracture on Computed Tomography Scan in Tertiary Trauma Care Center of Nepal. 尼泊尔三级创伤护理中心计算机断层扫描评估偶发骨折。
Pub Date : 2021-06-30 DOI: 10.3126/njr.v11i1.38545
Mamata Bhattarai, B. Thapa, S. Khadka, Govardhan Thapa
 Introduction:Chance fracture is a horizontal fracture of the vertebra extending from the posterior element to the vertebral body due to flexion-distraction injury and is potentially unstable. The aim of this study was to evaluate the demography and Computed Tomography scan findings in Chance fracture of the spine.  Method: A retrospective study was conducted at the National Trauma Center, National Academy of Medical Sciences over a period of one year (December 2019 to December 2020). Demographic data, mechanism of injury, and computed tomographic findings of Chance fracture were recorded.   Result: Computed tomography scans of 41 patients with Chance fracture were identified. Fall injury (76%) was the most common cause of Chance fracture followed by road traffic accidents. This fracture was most commonly seen in thoracolumbar junction TLJ (D10-L2); with L1 being the most affected vertebra (36.5%). Among posterior elements, facet distraction (84%) was the most common finding followed by lamina fracture (83%), and pedicle fracture (68%). Regarding vertebral body fracture, involvement of both superior and inferior endplates were common than isolated involvement of either one of them. CT revealed that a burst component was a common finding (68%) in Chance fracture. Conclusion: Chance fracture was commonly caused by fall injury in our context which is higher in incidence than previously reported. More than half of patients with Chance fracture also had Burst-type components that could influence surgical management. Computed tomography scans is a useful imaging modality for the assessment of Chance fracture and burst component.
偶发骨折是由屈曲-牵张损伤引起的椎体从后侧向椎体延伸的水平骨折,具有潜在的不稳定性。本研究的目的是评估脊柱Chance骨折的人口学和计算机断层扫描结果。方法:在美国国家医学科学院国家创伤中心进行为期一年(2019年12月至2020年12月)的回顾性研究。记录了Chance骨折的人口学数据、损伤机制和计算机断层扫描结果。结果:对41例Chance骨折患者进行了计算机断层扫描。摔伤(76%)是导致偶发骨折的最常见原因,其次是道路交通事故。这种骨折最常见于胸腰椎连接处TLJ (D10-L2);L1是最受影响的椎体(36.5%)。在后路椎体中,最常见的是关节突撑开(84%),其次是椎板骨折(83%)和椎弓根骨折(68%)。对于椎体骨折,上、下终板同时受累比其中任何一个受累更常见。CT显示爆裂成分是Chance骨折的常见表现(68%)。结论:偶然性骨折通常是由跌倒损伤引起的,其发生率高于以往报道。超过一半的Chance骨折患者也有可能影响手术治疗的爆裂型成分。计算机断层扫描是评估Chance骨折和破裂成分的一种有用的成像方式。
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引用次数: 0
Assessment of the Size of Sella Turcica among Nepalese Population by Computed Tomography 用计算机断层扫描评估尼泊尔人口中塞拉图西卡的大小
Pub Date : 2019-12-31 DOI: 10.3126/njr.v9i2.27429
Gourav Makaju, B. R. Joshi, R. Chand
Introduction: The deformity of the sella turcica is often a major clue that an abnormality exists within the cranium, hence a familiarity with the sella turcica anatomy and radiological appearance is important. The aim of this study was to assess the dimension of sella turcica of normal Nepalese people by using computed tomography scan of head and to correlate the dimension with the patient’s age and gender. Methods: This prospective study was performed in a tertiary hospital in Kathmandu. Data were collected over the period of 4 months from June to September 2018 with the total of 73 patients who underwent CT of head. The age and gender of the patients were noted. The dimensions of sella turcica were measured at the predefined three directions: length, depth and antero-posterior diameter of the sella turcica. Results: The sella turcica had a mean length of 8.375mm, AP diameter of 7.029mm, and depth of 10.13mm.The dimensions of the sella turcica increased with age till the age of 80 years and then decreased. Conclusions: This study concluded that the length, AP diameter and depth of the sella turcica vary with respect to age group. The length and depth of sella turcica were higher in males while AP diameter in females.
导读:蝶鞍畸形往往是颅内存在异常的主要线索,因此熟悉蝶鞍解剖和影像学表现是很重要的。本研究的目的是通过使用头部计算机断层扫描来评估正常尼泊尔人的蝶鞍尺寸,并将尺寸与患者的年龄和性别相关联。方法:本前瞻性研究在加德满都的一家三级医院进行。数据收集时间为2018年6月至9月4个月,共73例患者行头部CT检查。记录患者的年龄和性别。蝶鞍的尺寸在预定义的三个方向测量:蝶鞍的长度、深度和前后直径。结果:蝶鞍平均长度8.375mm, AP直径7.029mm,深度10.13mm。蝶鞍的尺寸随年龄增长而增大,80岁后逐渐减小。结论:蝶鞍的长度、AP直径和深度随年龄组的不同而不同。雄蝶蝶鞍的长度和深度大于雌蝶蝶鞍的直径。
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引用次数: 2
Prevalence and Spectrum of Fetal Congenital Anomalies: A Hospital Based Study from Mid-Western Part of Nepal 胎儿先天性异常的患病率和频谱:尼泊尔中西部一项基于医院的研究
Pub Date : 2019-12-31 DOI: 10.3126/njr.v9i2.27413
G. Khanal, P. Sharma, P. Kayastha, A. Poudel
Introduction: To estimate the prevalence and pattern of congenital anomalies through obstetric ultrasound on pregnant women visiting Rapti sub-regional hospital, Ghorahi, Dang, Nepal. Methods: A descriptive cross sectional study was conducted among 10,380 pregnant women visiting Radiology department of Rapti sub-regional hospital from January 2016 to July 2017. The findings of transabdominal ultrasonography (USG) performed by Radiologist and information regarding women’sage and gestational age were recorded. The images of any significant cases were also saved. Data wereanalyzed based on study objectives using descriptive statistics such as frequency, percentage, mean, rangeand standard deviation. The classification of the malformation was done based on the anatomical system. Results: Out of 10,380 ultrasound performed during the study period, 106 (1.02%) pregnant women presented with different congenital anomalies. The antenatal prevalence of congenital anomalies was 10.21 per 1000 pregnant women. The mean maternal age was 25.9 ± 4.80 years. Regarding gestation age, 87 (82.1%) anomalies were detected at second trimester of pregnancy. Most commonly involved body system was central nervous system 51 (48.1%), followed by cardiovascular system 12 (11.3%), musculoskeletal system 10 (9.4%), gastrointestinal system 5 (4.7%), respiratory system 5 (4.7%), genitourinary system 4 (3.8%). Other anomalies were cystic hygroma 9 (8.4%), hydrops fetalis 4 (3.8%), cleft lip 3 (2.8%), pelvic cystic lesion 2 (1.8%) and conjoined twins 1 (0.9%). Conclusion: The prevalence of congenital anomalies is high in mid-western part of Nepal.  Central nervous system anomalies were more common than other anomalies.
前言:通过产科超声对到访尼泊尔戈拉希Rapti分地区医院的孕妇进行先天性异常的患病率和模式估计。方法:对2016年1月至2017年7月在Rapti分区医院放射科就诊的10380名孕妇进行描述性横断面研究。经腹部超声检查(USG)的结果,并记录有关妇女的年龄和胎龄信息。保存了所有重要病例的图像。根据研究目的,使用描述性统计,如频率、百分比、平均值、范围和标准差,对数据进行分析。根据解剖系统对畸形进行分类。结果:在研究期间10380例超声检查中,106例(1.02%)孕妇表现出不同的先天性异常。产前先天性畸形患病率为每1000名孕妇10.21例。产妇平均年龄25.9±4.80岁。孕龄方面,87例(82.1%)在妊娠中期发现异常。最常受累的是中枢神经系统51例(48.1%),其次是心血管系统12例(11.3%),肌肉骨骼系统10例(9.4%),胃肠系统5例(4.7%),呼吸系统5例(4.7%),泌尿生殖系统4例(3.8%)。其他异常为囊性水肿9例(8.4%)、胎儿积水4例(3.8%)、唇裂3例(2.8%)、盆腔囊性病变2例(1.8%)和连体双胞胎1例(0.9%)。结论:尼泊尔中西部地区先天性畸形患病率较高。中枢神经系统异常较其他异常多见。
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引用次数: 3
Role of Multidetector Computerised Tomography in Evaluation of Proptosis 多探测器计算机断层扫描在诊断突出中的作用
Pub Date : 2019-12-31 DOI: 10.3126/njr.v9i2.27421
Elina Shrestha, N. Thapa, Shankar Bahadur Singh Rajbhandari
Introduction: Proptosis is defined as bulging of eye anteriorly out of the orbit. Our main objective was to analyze the pattern of computerised tomographic findings in evaluation of proptosis. Computerised tomography (CT) is noninvasive, easily accessible, affordable and reliable imaging which helps in early diagnosis and prompt treatment. Methods: A descriptive cross sectional study of total 58 patients presenting with proptosis referred to our department of radiology for computerised tomography evaluation during one year period were undertaken into study. The clinical information provided by ophthalmologist also helped our study to derive into conclusion. SPSS version 20 software was used for statistical data analysis. Results: Out of 58 patients, the most common cause of proptosis was neoplasm constituting of 25 cases (43.1%). Retinoblastoma was the commonest orbital tumor. Out of remaining cases, 15 (25.8%) were infective, 14 (24.1%) were inflammatory, two (3.44%) were traumatic and remaining two cases (3.44%) had no definitive cause for proptosis. Bilateral proptosis was commonly associated with thyroid ophthalmopathy. Among the subjects 32 were male, 26 were female. Male: Female ratio was 1:1.23. Age group was ranging from 1 month to 73 years.Mean age was 26.4 ± 22 years. Conclusions: Computerised tomography has an important role in distinguishing the different types of lesions based on their characteristics, location and extension prior to undertaking definitive surgical and medical treatment. Overall accuracy of CT in our study was 81%, sensitivity of 82.6%, specificity of 80.6%, positive predictive value of 76% and negative predictive value of 86.2%.
眼球突出是指眼球前方凸出眼眶。我们的主要目的是分析计算机层析成像结果的模式,以评估突出。计算机断层扫描(CT)是非侵入性的、容易获得的、负担得起的和可靠的成像,有助于早期诊断和及时治疗。方法:采用描述性横断面研究方法,对一年内到我科进行计算机断层扫描评估的58例突出患者进行研究。眼科医生提供的临床资料也有助于我们的研究得出结论。采用SPSS 20版软件对统计数据进行分析。结果:58例患者中,最常见的预后原因是肿瘤,占25例(43.1%)。视网膜母细胞瘤是最常见的眼眶肿瘤。其余15例(25.8%)为感染性,14例(24.1%)为炎症性,2例(3.44%)为外伤性,其余2例(3.44%)无明确病因。双侧突出常与甲状腺眼病相关。受试者中男性32人,女性26人。男女比例为1:1.23。年龄1个月~ 73岁。平均年龄26.4±22岁。结论:在进行明确的手术和药物治疗之前,计算机断层扫描在区分不同类型病变的特征,位置和扩展方面具有重要作用。本研究CT的总体准确率为81%,敏感性为82.6%,特异性为80.6%,阳性预测值为76%,阴性预测值为86.2%。
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引用次数: 0
Thyrolipoma: A Rare Thyroid Gland Entity 甲状腺脂肪瘤:一种罕见的甲状腺实体
Pub Date : 2019-07-13 DOI: 10.3126/NJR.V9I1.24813
Pragya Singh, M. Mittal, Sonam Sharma
Fat-containing thyroid swellings are rare with limited differentials including lipomatous goiter, heterotopic thyroid rests, amyloid goiter, lymphocytic thyroiditis, Grave’s disease, adenolipoma, intrathyroid thymic or parathyroid lipoma, encapsulated papillary carcinoma, and liposarcoma etc. We present a case of a 60-year-old euthyroid female with a long standing thyroid swelling radiologically and pathologically diagnosed as thyrolipoma (adenolipoma). Thyrolipomas are occasionally diagnosed. However, these lesions are considered to be benign and are treated surgically.
含脂性甲状腺肿是罕见的,鉴别有限,包括脂肪瘤性甲状腺肿、异位性甲状腺肿、淀粉样甲状腺肿、淋巴细胞性甲状腺炎、格雷夫斯病、腺脂肪瘤、甲状腺内胸腺或甲状旁腺脂肪瘤、包膜状乳头状癌、脂肪肉瘤等。我们报告一位60岁甲状腺功能正常的女性,放射学和病理学诊断为甲状腺脂肪瘤(腺脂肪瘤)。甲状腺脂肪瘤偶尔被诊断出来。然而,这些病变被认为是良性的,可以通过手术治疗。
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引用次数: 4
期刊
Nepalese Journal of Radiology
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