Retroperitoneal hemorrhage as a complication of lumbar paravertebral injections; report of three cases.
D005767:Gastrointestinal Diseases; D006470:Hemorrhage; D006801:Humans; D008161:Lumbosacral Region; D010537:Peritoneum; D013564:Sympathetic Nervous System
NERVOUS SYSTEM, SYMPATHETIC; PERITONEUM