Aggressive Intra-Abdominal Fibromatosis in an Adolescent Girl - An Unusual Sequelae to Ovarian Germ Cell Tumor

Abdominal fibromatosis presenting as an abdominal mass is a rare occurrence in a gynecological setting. The diagnosis might not be suspected preoperatively, and management could be challenging.

An 18-year-old girl with ovarian germ cell malignancy was managed with staging laparotomy and chemotherapy. She developed a large abdominal mass 10 months later. An abdominopelvic mass (40 × 20 cm) was removed at laparotomy. The histopathological diagnosis was intra-abdominal fibromatosis. A rapidly growing abdominal mass recurred postoperatively. After discussion with the tumor board, chemotherapy with methotrexate and vinblastine was started. The tumor was not responsive, and the patient succumbed after the second cycle of chemotherapy.

Abdominal fibromatosis should be considered among the differential diagnoses of a rapidly growing abdominal mass after resection of an ovarian germ cell tumor.