Pelvic Fibromatosis Following Total Abdominal Hysterectomy with Bilateral Salpingo-oophorectomy: A Case Report

Desmoid tumours, also known as aggressive fibromatosis, are rare, benign, non-inflammatory, fibroblastic tumours. They are characterised by locally aggressive behaviour and a high potential for recurrence, but they do not metastasise. Here, the authors report the case of a 51-year-old female who presented with a lump in the lower abdomen for one month. The patient had a history of exploratory laparotomy with total abdominal hysterectomy and bilateral salpingo-oophorectomy for ovarian cystadenocarcinoma 15 years earlier. Following Ultrasonography (USG) and Contrast-Enhanced Computed Tomography (CECT) of the abdomen and pelvis, an exploratory laparotomy was performed, and a mass that was free from adjacent structures was excised. Histopathological examination revealed benign desmoid-type fibromatosis with osseous and chondroid metaplasia. The patient was discharged uneventfully. The current incidentally detected desmoid-type fibromatosis with osseous and chondroid metaplasia highlights the importance of vigilant follow-up and consideration of diverse pathologies, even in low-risk clinical scenarios.