Tata Memorial Hospital

About: Tata Memorial Hospital is a healthcare organization based out in Mumbai, India. It is known for research contribution in the topics: Cancer & Breast cancer. The organization has 3187 authors who have published 4636 publications receiving 109143 citations.

Human papillomavirus/p16 positive head and neck cancer in India: Prevalence, clinical impact, and influence of tobacco use

Abstract: BACKGROUND: Limited data are available on the prevalence and prognostic significance of human papillomavirus (HPV) in squamous cell carcinoma of head and neck (SCCHN) in the Indian population. AIM: The present study aimed to determine the prevalence of HPV and p16 in an Indian cohort of SCCHN and assess their correlation and influence of tobacco use on patient outcomes. MATERIALS AND METHODS: The p16 and HPV status of 170 patients of SCCHN treated with curative chemoradiotherapy was determined using immunohistochemistry and polymerase chain reaction, respectively, and further correlated with their demographic characteristics. In addition, genotyping of HPV-positive samples was performed. Survival outcomes were analyzed and compared for both p16 positive (p16 +ve) and p16 negative (p16 −ve) population. The influence of tobacco use on outcomes was assessed. RESULTS: p16 expression was observed in 20% (34/170) cases whereas HPV positivity was detected in 39.4% (67/170) of SCCHN patients with HPV16 being the most common (91%) subtype. About 73.5% patients were p16 +ve among the tobacco users in this cohort (83.5%). Interestingly, p16 positivity was significantly associated with nonusers of tobacco ( P = 0.02) and younger females ( P = 0.06). The p16 +ve and p16 −ve groups did not exhibit a significant difference in the 5-year cause-specific survival (CSS) (79% vs. 72.2%), disease-free survival (DFS) (78.3% vs. 68.3%, P = 0.5), and locoregional control (LRC) (82.2% vs. 71.5%, P = 0.4). However, the outcome analyses in tobacco nonusers revealed a definite large improvement in CSS ( P = 0.08) and a trend toward improvement in DFS ( P = 0.15) and LRC ( P = 0.11) in the p16 +ve versus the p16 −ve groups. CONCLUSION: The low prevalence of p16 positivity (20%) and dual HPV and p16 positivity (38.8%) in the studied Indian cohort indicates the low utility of p16 as a surrogate for HPV in the background of high tobacco burden. The outcomes are largely improved in a small subset of SCCHN cases comprising p16 +ve tobacco nonusers.

Spinal epidermoid cyst with sudden onset of paraplegia

Abstract: Spinal epidermoid cysts, whether congenital or iatrogenic, are relatively uncommon in the spinal cord. When they occur, the typical location is in the subdural, extramedullary space of the lumbo-sacral region. We describe an unusual presentation in a 3-year-old male child which mimicked astrocytoma clinicoradiologically. The child developed sudden onset of inability in walking and weakness of both lower limbs after a fall. There was a dramatic reversal of symptoms after surgery. Histopathology revealed an epidermoid cyst of the spine. On the first follow-up visit at 3 months, the child was asymptomatic.

Chondrosarcoma of bone: does the size of the tumor, the presence of a pathologic fracture, or prior intervention have an impact on local control and survival?

Abstract: Aims and Objectives: We studied 45 patients with chondrosarcoma, without metastasis at diagnosis, who were surgically treated between January 2000 and December 2004 to evaluate the risk factors associated with local recurrence and metastasis. Materials and Methods: Fourteen (31%) patients had had some major prior intervention, either in the form of an open biopsy or a curettage / unplanned excision, before presenting to us. Eight patients had pathologic fractures at presentation. None of the patients received adjuvant chemotherapy or radiotherapy. The follow-up duration ranged from 8-75 months. All survivors had a minimum follow-up of 36 months (range 36-75 months). Results: There were 11 grade 1 (24.5%), 23 grade 2 (51%), and 11 grade 3 (24.5%) chondrosarcomas. Thirty-two (71%) patients had tumors that were larger than 8 cm in the greatest dimension. Margins were adequate in 31 patients. Twenty-five patients had disease relapse; there were four local failures, nine distant failures, and 12 combined failures. At the time of the last review, 12 patients had died, 11 were alive with disease, and 22 were free of disease. The cumulative event-free survival was 44% and the overall survival was 73%. Conclusion: Grade of tumor, size of tumor, and adequacy of resection might be important predictors of outcome. Local recurrence is a prelude to distant metastasis and portends poor ultimate survival. The presence of a pathological fracture could indicate biologically aggressive disease, and limb salvage in these cases should be advised with caution. Even in cases where there has been a prior unplanned intervention, local control can be achieved by subsequent adequate resection.