摘要: Abstract In two patients with systemic lupus erythematosus, an acute crisis developed multisystem involvement that included peritonitis. Paracentesis was performed and the fluid obtained sterile serous. one patient antinuclear antibody test on paracentesis showed 4+ peripheral staining. The clinical impression these episodes represented activity supported by results of paracenteses. Laparotomy not were treated high doses intravenous steroids antibiotics a favorable response. Frequent abdominal examinations follow-up gastrointestinal series did disclose ulceration and/or perforation which may have been masked steroids. is recommended as useful method distinguishing from peritonitis in erythematosus presenting abdomen.