[Ultrasonographic study of retroperitoneal and abdominopelvic hematomas].

A sonographic diagnosis was obtained in 33 hematomas encountered in conditions of emergency. Most hematomas were related to anticoagulant therapy. Most hematomas were located within the psoas muscle sheath, hematomas of the abdominal wall and Retzius'cavum. Follow-up examination of non operated hematomas show a progressive decrease of echogenicity.