Magnetic Resonance Imaging Features of Diffuse Cavernous Hemangioma of the Uterus Misdiagnosed as a Low Grade Sarcoma: A Case Report

Uterine cavernous hemangioma is a rare vascular tumor that is more commonly reported as an acquired disease in pregnant women. Rarity of the case impeded the radiologist to be able to find characteristic imaging findings to diagnose the disease before surgery. We report a 40-year-old premenopausal woman with cavernous hemangioma of the uterus that was misdiagnosed as a low-grade sarcoma because of the non- typical imaging feature of this pathology that has not been reported before. The ultrasound exam of the patient only demonstrated global enlargement of the myometrium. Magnetic resonance imaging (MRI) showed diffuse myometrial edema with multiple linear low signal strands, without endometrial involvement and with mild restriction in diffusion-weighted imaging (DWI) that resulted in a lobulated border of uterine contour. MRI could be a helpful imaging modality for proper diagnosis of uterine hemangioma before surgery.