Ultrasonographic diagnosis of psoas hematoma.

Ultrasonic examination of 3 patients with psoas hematoma is discussed. The main feature is a well-defined transsonic mass situated in the psoas muscle, on longitudinal sections spindle-shaped and ovoid on transverse sections. Ultrasonography is recommended as the procedure of choice in a patient with bleeding disorder and an abdominal mass. Urography shows medial deviation of the homolateral ureter.