Journal of cancer research and therapeutics最新文献

Context: Oral cancer is highly prevalent in India. Lack of awareness and delay in diagnosis and treatment of patients with oral cancer leads to high mortality and poor survival of patients. Salivary endothelin-1 is proposed as a prospective biomarker for oral squamous cell carcinoma.

Aims: Aim of the study was to evaluate salivary level of endothelin-1 in oral cancer and precancer as a biomarker.

Settings and design: We planned a case control study to evaluate salivary level of Endothelin-1 in oral cancer and precancer as a biomarker.

Materials and methods: A total of 72 subjects were taken in study out of which 24 cases were of histopathologically confirmed premalignat oral lesion (oral leukoplakia and oral submucous fibrosis), 24 cases were of histopathologically confirmed oral squamous cell carcinoma, and 24 cases of healthy age and gender matched controls without any addiction to tobacco in any form from a tertiary care hospital were taken. Saliva was collected from all following standard guidelines and estimation of salivary endothelin-1 was done by ELISA.

Statistical analysis used: SPSS software version 15.

Results: Salivary endothelin-1 values of controls ranged between 0.09 and 1.88 pg/ml while that of premalignant cases ranged between 1.16 and 16.135 pg/ml and of SCC cases ranged between 2.567 and 22.98 pg/ml.

Conclusions: Salivary endothelin-1 is raised in oral squamous cell carcinoma compared to premalignant and controls therefore, shows capability to differentiate between premalignant lesion and oral cancer. So, it could be used as a biomarker for early diagnosis.

Abstract: Ganglioneuroma (GN) is the most differentiated and benign variant of neuroblastic tumors, most commonly located in the posterior mediastinum, followed by the retroperitoneum and adrenal gland. Children of <10 years of age are more commonly affected than adults. Though benign, GNs can very rarely metastasize to regional lymph nodes or distant sites like liver, bone, spleen, and soft tissues. Metastatic lesions are assumed to represent neuroblastomas in which the metastasis and the primary tumor, both have matured. This differentiation can occur spontaneously or after treatment. We present a primary ganglioneuroma of adrenal gland in a 4-year-old child with nodal metastasis, without any blastemal component at any site.

Introduction: Ultrasound- and CT-guided fine needle aspiration cytology (FNAC) increases the accessibility of intra-abdominal masses to the liver and gall bladder with the advantages of low cost and high diagnostic yield. Cell block technique has been known for further increasing the diagnostic accuracy.

Aims and objectives: We aimed to study the effectiveness of FNAC and the cell block method in cytological diagnosis of liver and gall bladder masses. We also followed a step-wise approach to increase the success rate.

Materials and methods: A 2-year observational study was done from July 2020 to June 2022. Total 80 guided (CT and ultrasound) aspirations were done from space occupying/mass lesions in the liver [74 (92.5%)] and gall bladder [6 (7.5%)], out of which cell blocks by the plasma thrombin method were prepared in 12 cases (15%). The on-site radiological details were noted, and rapid on-site evaluation was done in 65 cases (81.25%). The prepared cytology slides were stained with Papanicolaou, H and E and May-Grunwald Giemsa (MGG) stain. The cytological diagnosis was noted, and the uses and limitations (if any) were observed in each case. A step-wise structured questionnaire format was developed to assist the reporting pathologist so as not to miss out on important diagnostic observations, if present.

Results: FNAC in 71 cases (88.7%) gave a conclusive diagnosis. The maximum number of cases were of adenocarcinoma [38 (51.3%)] from the liver followed by hepatocellular carcinoma in 10 cases (13.5%). In gall bladder masses, all 6 cases (100%) were positive for malignancy, out of which 4 cases (66.7%) could be characterized as adenocarcinoma. The cell block preparation was helpful in reaching the diagnosis as well as typing the malignancy in 10 cases (83.3%). The chief limitation observed on conventional cytology smears was inadequate cellularity, which caused inconclusive diagnosis in 9 cases (11.25%). The reporting questionnaire was helpful chiefly in terms of time-efficient reporting in 34 cases (42.5%), increasing the ease and confidence in 69 cases (86.25%) and the advantage of reproducibility of data in all cases (100%) according to the case-by-case evaluation by the reporting pathologists.

Conclusion: Guided FNAC in conjunction with the cell block technique is extremely helpful in the evaluation of mass lesions of the liver and gall bladder for cytological diagnosis. A proper step-wise approach may be useful to reach a quick and effective diagnosis.

Purpose: This study aimed to evaluate the volumetric and geometric changes in the parotid glands and target volume during image-guided radiotherapy (IGRT) for locally advanced oropharyngeal cancers.

Materials and methods: Twenty patients receiving radiotherapy using IGRT at a dose of 70 Gy/35 fractions/7 weeks for locally advanced oropharyngeal cancers were accrued. Radiotherapy planning computed tomography (CT) scans were performed at pre-radiotherapy (RT), 20, 40, and 60 Gy for each patient. Volume changes in target and parotids along with shifts of parotids were assessed with respect to pre-RT scan after co-registration. In study scans, GTVp and GTVn were recontoured as per particular CT. CTV and PTV were copied from planning CT to study CT. CTV was edited from anatomical barriers, and PTV was edited only from the skin in the study CT. The parotids were recontoured on each study scan. The center of mass (COM) of C2 vertebral body was considered as the reference to evaluate its shifts.

Results: There was a statistically significant percentage regression of ipsilateral and contralateral parotid mean volumes at the rate of 0.85%/0.207 cc and 0.98%/0.26 cc per day, respectively. We observed the mean medial shift of center of mass of ipsilateral parotid of 2.23 mm (p = 0.011) and contralateral parotid of 2.67 mm (p = 0.069) at the end of 60 Gy. GTVp (mean) reduced from 41.87 cc at 0 Gy to 31.13 cc (25.65%) at 60 Gy (p = 0.003), while GTVn (mean) reduced from 19.98 cc at 0 Gy to 10.79 cc (45.99%) at 60 Gy (p = 0.003). There was a statistically significant reduction in CTV and PTV volumes at 60 Gy.

Conclusion: Statistically significant volumetric and geometric changes occurred during intensity-modulated radiation (IMRT), which were most prominent after 40 Gy and were maximum at 60 Gy. There was a medial shift of parotid glands toward the high-dose region. This study can be useful to devise an adaptive radiotherapy strategy.

Background: Pseudomyxoma peritonei (PMP) is an unusual clinical condition typically presenting with widespread mucinous neoplastic lesions within the peritoneum resulting in gelatin material-rich ascites. It was first described by Werth in 1884. Ever since, its clinical presentation, definition, site of origin, and prognosis have been a subject of debate. However, many histopathologic, immunohistochemical, and genetic studies have attempted to locate the primary lesion in the appendix in both genders.

Objectives: To analyze the histological origin and survival outcomes of pseudomyxoma peritonei in patients treated at a regional cancer center.

Materials and methods: Fifteen cases of PMP were diagnosed during the five-year study period. The demographic and clinicopathological details were retrieved; the slides were reviewed and histological parameters reassessed. Descriptive statistics were used to express proportions. Continuous variables were recorded as mean (SD) or median (IQR). Kaplan-Meier (KM) curve was used to estimate overall survival.

Results: Mean age for PMP was found to be 47.5 years for low grade Mucinous Carcinoma Peritonei (MCP), 54.2 years for high grade MCP, and 58 years for high grade MCP with signet ring cells. Most common overall presentation was abdominal distension in 53.3% (8/15) of cases, followed by acute appendicitis in 20% (3/15) cases. PMP was detected synchronous with the primary tumor in 9/15 cases (60%). Primary lesion in the appendix was grossly identified in 7/15 cases, while it was not explored in the remaining eight cases. Yet, by combined clinical, radiological, histopathological, and immunohistochemical analysis, we identified that most of the cases (14/15) had an appendiceal origin (93.3%). The overall survival for 12 months was 50% and for 18 months was 37%.

Conclusion: The surgeon and radiologist may well bear in mind the most common possibility of an appendiceal origin for PMP and resect the appendix, irrespective of the presence of a grossly or radiologically detectable lesions. We emphasize that immunohistochemistry helped to detect the site of origin even when the primary was occult.

Aim: Carcinogenesis is associated with multiple mutations that lead to chromosomal instability (CIN). Our aim was to study the role of markers of CIN on breast cytology and correlate with histopathological diagnosis.

Materials and methods: A retrospective observational study was conducted over a year on 100 breast cytology cases. Leishman-stained smears were examined for the number of micronuclei (MN), chromatin bridge (CB), and multipolar mitosis (MPM). MNs were counted manually in 1,000 cells under oil immersion (1000×). The frequency of CB and MPM was also noted. The malignant cases were graded as low (grades 1 and 2) and high (grade 3).

Results: The mean age of the patients was 43.47 ± 15.81 years. The mean MN score for fibroadenoma cases was 4.54 (±1.5) and for malignant cases was 29.32 (±8.15). The receiver-operator curve (ROC) curve analysis confirmed >9 MN score as 100% specific and 100% sensitive for malignancy (area under the curve [AUC] =1). A significant comparison was noted between the mean MN of benign and malignant cases (P < 0.000001). The mean MN score for low-grade cases was 26.64 (±5.85) and for high-grade cases was 33.68 (±5.85) with a significant difference observed on comparing the population mean MN with a grade of malignancy (P-value = 0.01886). The difference between the frequencies of CB in low and high-grade cases was also found to be significant (P-value = 0.04135).

Conclusion: The presence and scoring of markers of CIN (MN, CB, and MPM) on breast cytology have potential significance in the diagnosis of breast lesions.

Abstract: An eight-year-old child presenting with increased thirst, raised intracranial tension and visual deterioration was diagnosed with synchronous suprasellar and pineal lesions, for which she underwent partial resection of the suprasellar lesion. Histopathological examination suggested pure germinoma. Tumor marker evaluation showed significantly raised levels of beta human chorionic gonadotropin (βHCG), favoring a non-germinoma germ cell tumor (NGGCT), leading to a diagnostic dilemma as the histology and βHCG levels were contradictory. Giving cognizance to the tumor marker levels, the treatment was designed on the lines of NGGCT. Planning of radiotherapy including craniospinal irradiation (CSI) and boost to both lesions was once again a challenge, given the proximity of the lesions to vital organs at risk (OAR). Given the child's age and location of lesions, the target volumes and doses of radiation were designed to optimize between the goals of achieving long-term local control and minimizing late-onset toxicities.

Abstract: Jumping translocation (JT) is a cytogenetic event in which a donor chromosomal segment is translocated to two or more recipient chromosomes. We describe a case of a 75-year-old female patient diagnosed with acute myeloid leukemia (AML) with monocytic differentiation having acquired JT involving 3q21→3qter as a donor chromosomal segment with 12 different recipient chromosomes. Each abnormal clone had monosomy 7 and trisomy 8. Patients with JT have an adverse outcome, a high risk of disease progression, and an unfavorable prognosis. This is the sixth case of JT involving 3q21 and the first case having 12 different recipient chromosomes (15 chromosomal segments) along with monosomy 7 in all abnormal clones reported in the literature.

Abstract: Primary signet ring cell carcinoma (SRCC) of the breast is a rare and aggressive type of breast cancer characterized by increased intracellular mucin production. It has a high risk of metastasis and poor prognosis compared to other breast cancer types. We report a 56-year-old woman with primary SRCC of the breast who first presented with retraction on her left breast. Radiological examination revealed a mass that causes the retraction. The patient underwent left modified radical mastectomy, and pathology results showed a 70% signet ring cell pattern. Chemotherapy consists of an adriamycin-cyclophosphamide regimen administered. in this case, we aim to review the literature on this topic and inform the physicians.