Cough-induced internal oblique hematoma.

Violent or sustained cough can be associated with serious musculoskeletal complications. We report a case of a cough-induced internal oblique hematoma in an obese 73-year-old woman who was not receiving antithrombotic therapy. She had no history of trauma and presented with acute worsening pain in the right flank. She had been coughing continuously for the past month and had severe cough 2 days before the onset of pain. Ultrasonography revealed a hypoechoic mass in the right lateral abdominal wall. Unenhanced computed tomography of the abdomen showed a 7 cm × 7 cm × 4 cm hematoma in the right internal oblique muscle. The patient was managed conservatively without blood transfusion. Acute abdominal pain together with an abdominal painful mass, particularly in patients with cough, should alert physicians to the possibility of an abdominal wall hematoma.