title: Differential wound bleeding at laparotomy can be a sign of an aortocaval fistula.
mesh_terms: D000368:Aged; D001012:Aorta, Abdominal / Q000601:surgery*; D001014:Aortic Aneurysm / Q000601:surgery*; D001019:Aortic Rupture / Q000601:surgery*; D001164:Arteriovenous Fistula / Q000601:surgery*; D001807:Blood Vessel Prosthesis; D006470:Hemorrhage / Q000601:surgery; D006801:Humans; D007431:Intraoperative Complications / Q000601:surgery*; D008297:Male; D014682:Vena Cava, Inferior / Q000601:surgery*