Endometriosis. [Gynecologic] [CT]

36 year old female with a history of C-section. Then she started feeling a growing mass in her surgical scar.

CT shows a spiculated mass along the C-section scar that invades the right inferior rectus muscle. A differential diagnosis of desmoid tumor, endometriosis, and soft tissue sarcoma was provided.

Surgical resection of the mass was performed, which turned out to be endometriosis.