Prophylaxis with standard low dose subcutaneous heparin has been shown to significantly decrease the risk of deep vein thrombosis and pulmonary embolism, without major bleeding complications. The present report describes a case of unexpected hematoma formation, possibly secondary to subcutaneous low dose heparin injection that was administered in the anterior abdominal wall in a patient who had previously undergone a transverse rectus abdominis musculocutaneous flap reconstruction.
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