Teenager with left hip pain after trauma and a decreasing hemoglobin

CT of pelvis fracture with active bleeding into the pelvis
AP radiograph of the pelvis (above left) shows fractures through the left iliac wing and the left superior and inferior pubic rami. A large hematoma in the muscle medial to the iliac wing fracture is demonstrated on the axial CT with contrast of the pelvis (above right). Axial CT with contrast of the pelvis on initial images (below left) shows a focal round and linear high density object near the left pubic ramus fracture which on the delayed images (below right) has grown much larger in size.

The diagnosis was pelvis fracture with active bleeding into the pelvis.