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INTRODUCTION: Leiomyosarcoma (LMS) constitutes approximately 10% of all soft tissue sarcoma in the gynecological tract, most commonly occurs in the uterus. Broad ligament LMS is very rare with less than 30 cases reported in English literature. Gardner et al. proposed the definition of tumor of broad ligament as ?Tumors occurring on or in the broad ligament and completely separated from and in no way connected with either the uterus or the ovary?. LMS has a varied prognosis but in general is aggressive with 5-year survival of 25?76% CASE REPORT: A 60 year old, P10L9 tubectomised presented with complaints of mass per abdomen since 6 months and history of weight loss since 6 months. Patient attained menopause at 46 years of age. Per abdominal examination showed mass of 24 weeks size of variable consistency palpated in the lower abdomen. On P/S cervix was pulled up. On P/V fullness was present in anterior and B/L fornices. On P/R mass felt inn the anterior wall, rectal mucosa was free. Patient underwent exploratory laparotomy with retroperitoneal tumor excision with total abdominal hysterectomy with B/L salpingo-oophorectomy. A retro peritoneal mass of 16x10x8cm was sent for HPE and reported as broad ligament leiomyosarcoma. CONCLUSION: Although broad ligament leiomyosarcoma is rare, one should consider it as a differential diagnosis while dealing with malignant pelvic tumor in menopausal patients. Complete surgical resection of mass with TAH and BSO followed by adjuvant chemotherapy and radiotherapy should be considered in treatment.