RADIOLOGY: MUSCULOSKELETAL: Case# 34047: PELVIC AND SACRAL FX; SMALL LUNG CONTUSIONS BILATERALLY. 18 year old male in motor vehicle accident. 1. Chest CT shows small lung contusions bilaterally without mediastinal abnormality. 2. Significant left acetabular sacral and pelvic fractures with large hematoma mostly in the extraperitoneal region. A small amount of fluid is seen intraperitoneal. 3. Motion artifact limits evaluation of the upper abdomen, but there is no gross hepatic or splenic laceration. 4. CT cystogram within normal limits.