Malignant solitary fibrous tumor of the pelvis. PELVIS:UTERUS, ADNEXA: Anteflexed uterus. The endometrial thickness is normal. Endomyometrium/junctional zone is normal in thickness. No discrete uterine mass.BLADDER: The bladder is normally distended without a focal abnormality.LYMPH NODES: Nonspecific mildly prominent benign morphology inguinal lymph nodes.BOWEL, MESENTERY: No significant abnormality noted.BONES, SOFT TISSUES: Post-surgical changes extending from the left piriformis towards the left aspect of the vagina. The right piriformis muscle appears atrophic relative to the left. The focus of enhancement in the left piriformis muscle measures 12 x 8 mm (series 1202/262), unchanged. No additional foci of abnormal enhancement.OTHER: No significant abnormality noted.
1. Stable 1.2 cm focus of enhancement in the left piriformis muscle, likely of vascular origin.2. Stable right piriformis atrophy.