Abstract: bdominal cocoon syndrome is a clinically rare abdominal disease,also known as idiopathic sclerosing peritonitis,congenital intestinal incarceration,etc.Its etiology remains unclear,preoperative diagnosis is difficult,clinical misdiagnosis is common,and treatment is subject to considerable controversy .Our hospital recently admitted a patient in whom dense adhesions caused by abdominal cocoon syndrome were found during surgery to have compressed an intra-abdominal cyst against the gastric fundus,leading to a preoperative misdiagnosis as a gastric fundus mass.

Key words: abdominal cocoon, abdominal cyst, gastric fundus mass