Abstract
e16526 Background: Carcinosarcoma is a biphasic neoplasm composed of a mixture of malignant epithelial and mesenchymal components. Uterine carcinosarcomas comprise only 3% of all uterine malignancies, however they account for a disproportionally higher rate of mortality from uterine cancer because of their agressive nature. No standardized treatment has yet been established. The purpose of this study was to determine the clinical characteristics, patterns of recurrence and survival outcomes in patients with uterine carcinosarcoma treated in our institution. Methods: Records of the patients with uterine carcinosarcoma were retrospectively evaluated and 29 pts with carcinosarcoma diagnosed between 2007 and 2012 were identified. All patients were initially treated surgically by the same surgeon with comprehensive staging, i.e. total abdominal hysterectomy, bilateral salphingooopherectomy , bilateral pelvic and paraaortic lymph node dissection and omentectomy. Demographic features, tumor characteristics, treatment regimens and patient outcomes in terms of relapse-free survival (RFS) and overall survival (OS) were analyzed. Results: Median age was 63 (range 43-78). 13 patients (45%) had stage I disease, 5 patients (17%) had stage III and 11 patients (38%) had stage IV disease at diagnosis. Median tumor size was 6 cm (range 1.7-20 cm) and lymphovascular invasion was present in 17 patients 59%). Twenty patients (69%) received chemotherapy (90% with paclitaxel and carboplatin) for 6 cycles. One patient received radiotherapy. Median follow up was 13 mos. Seventeen patients (59%) relapsed and 20 patients (69%) died on follow up. Two patients had vaginal cuff recurrence, 4 had pelvic, 4 had abdominal and 7 had distant recurrences. All recurrences were fatal. 3 year RFS was 31%. 3 year OS was 15%. Conclusions: Our data show that uterine carcinosarcomas tend to be more at more advanced stage at diagnosis and despite the use of chemotherapy and radiotherapy, overall prognosis is poor. Surgery remains the mainstay of treatment. More effective adjuvant strategies are needed to reduce relapse and death rates because recurrences are generally fatal.
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