18-year-old female soccer player with right groin pain. Assess for femoral neck stress fracture versus iliopsoas strain. ACETABULAR LABRUM: The acetabular labrum appears intact within the limitations of a non arthrogram study.ARTICULAR CARTILAGE AND BONE: There is no evidence of stress reaction/fracture affecting the right femur. The right hip joint alignment is anatomic. There is a small focus of increased bone marrow signal abnormality on fluid sensitive sequences within the sacrum about the left inferior sacroiliac joint suggesting a peculiar cyst or perhaps stress reaction. No discrete fracture line is identified. There is no signal abnormality within the adjacent iliac bone to suggest a sacroiliitis. SOFT TISSUES: The imaged musculature in normal in appearance. ADDITIONAL
1. No evidence of iliopsoas strain or right femoral stress fracture as clinically questioned. Otherwise no findings to account for the patient's right groin pain. 2. Small nonspecific focus of signal abnormality within the sacrum about the inferior aspect of the left sacroiliac joint may represent an atypical subchondral cyst or stress reaction. 