Diagnostic abdominal paracentesis.
D000006:Abdomen, Acute / Q000175:diagnosis*; D000007:Abdominal Injuries / Q000175:diagnosis*; D001202:Ascitic Fluid / Q000032:analysis*; D005734:Gangrene / Q000175:diagnosis; D006801:Humans; D007420:Intestine, Large / Q000503:physiopathology; D010195:Pancreatitis; D010437:Peptic Ulcer / Q000175:diagnosis