Life-threatening abdominal wall hematoma in a chronic renal failure patient after a single dose of enoxaparin.

We present a patient with chronic renal insufficiency who developed a massive posttraumatic abdominal wall hematoma after a single therapeutic dose of enoxaparin administered during workup of chest pain. Surgical evacuation of the hematoma was required to control life-threatening hemorrhage. Low-molecular-weight heparin use is not without risk and mandates appropriate indication and accurate dosing. Bleeding can occur at any site during heparin therapy, and abdominal wall hematoma should be considered as a source after traumatic injury.