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 ORIGINAL ARTICLE
Year : 2018  |  Volume : 55  |  Issue : 1  |  Page : 37-44

Analysis of bone and soft-tissue sarcomas registered during the year 2012 at Tata Memorial Hospital, Mumbai, with clinical outcomes


1 Department of Medical Oncology, Clinical Research Secretariat, Tata Memorial Hospital, Mumbai, Maharashtra, India
2 Department of Radiation Oncology, Clinical Research Secretariat, Tata Memorial Hospital, Mumbai, Maharashtra, India
3 Department of Surgical Oncology, Clinical Research Secretariat, Tata Memorial Hospital, Mumbai, Maharashtra, India
4 Trial Coordinator, Clinical Research Secretariat, Tata Memorial Hospital, Mumbai, Maharashtra, India
5 Department of Radio Diagnosis, Bone and Soft Tissues, Disease Management Group (DMG), Tata Memorial Hospital, Mumbai, Maharashtra, India
6 Department of Nuclear Medicine and Molecular Imaging, Bone and Soft Tissues, Disease Management Group (DMG), Tata Memorial Hospital, Mumbai, Maharashtra, India
7 Department of Surgical Pathology, Bone and Soft Tissues, Disease Management Group (DMG), Tata Memorial Hospital, Mumbai, Maharashtra, India

Correspondence Address:
Bharat Rekhi
Convener, Bone and Soft Tissues DMG
India
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/ijc.IJC_481_17

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Introduction: Primary bone and soft tissue sarcomas are rare, but diagnostically and therapeutically challenging group of tumors, requiring multidisciplinary management. There are limited documented studies from multidisciplinary teams , in the form of comprehensive analysis of these tumors, from our country. This study is an analysis of cases of osteosarcomas, Ewing sarcomas (ESs), chondrosarcomas (CSs), and soft-tissue sarcomas (STSs), registered at our institution during 2012. Methods: Clinical details, including outcomes of cases of bone and STSs, during the year 2012, were retrieved from the medical records of our institution and were further analyzed. Results: Ninety-five high-grade, extremity-based, treatment-naïve cases of osteosarcomas were treated with a novel, dose-dense, nonhigh-dose methotrexate-based OGS-12 protocol. Good histopathologic response (necrosis ≥90%) was achieved in 59% nonmetastatic and 56% metastatic patients. At a median follow-up of 48 months, the estimated 5-year event-free survival and overall survival (OS) were 67% and 78%, respectively. In the metastatic cohort at a median follow-up of 51 months, the 5-year estimated progression-free survival was 24% and OS was 26%. Among 87 (73.2%) nonmetastatic and 32 (26.8%) metastatic, analyzable cases of ES, at a median follow-up of 40 months, the disease-free survival (DFS) and OS in the nonmetastatic group were 62% and 83%; in the metastatic group, they were 37.5% and 65.6%, respectively. Among 40 cases of CSs (33 nonmetastatic and 7 metastatic), 21 had limb salvage surgery while 5 had amputation. Microscopically, 90.4% were Grade II CSs. Five-year OS and DFS were 84.6% and 71%, respectively. Among 189 high-grade, extremity-based STSs (89% nonmetastatic), synovial sarcoma was the most common subtype (31%). Eighty-five percent had limb preservation surgery; a majority were offered adjuvant radiation with or without chemotherapy. At a median follow-up of 51 (1–63) months, 3-year local control, DFS, and OS were 81%, 48%, and 64%, respectively. Conclusions: The novel OGS 12 and Ewing Family of Tumors 2001 protocols have shown comparable outcomes to international standards in cases of osteosarcoma and ES, respectively, and merit wider applications, especially in low- and middle-income countries (LMICs). Outcomes in STS and CSs were also comparable and underscore the importance of a multidisciplinary approach for the management of sarcomas in LMICS.






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