CT Diagnosis of Peritoneal Cystic Lesions

Objective:To study the CT features of peritoneal cystic lesions and their value in diagnosis.Methods:CT findings of 57 cases with peritoneal cystic lesions were analyzed and compared with the operative and pathological results.Results:According to the CT findings,21 cases of peritoneal cystic lesions were found to be well-defined cystic or cystic-solid masses.7 cases of mesenteric cyst were connected with mesentery root.In 5 cases of pseudomyxoma peritonei,multiple cystic masses with septations were located in anterohepatic,posthepatic and subcolonic space respectively.3 cases of cystic mesothelioma were confined to lower abdominal cavity and enhancement was observed within cyst wall which was slightly thickened.4 cases of abdominal lymphangioma were confined to gastrohepatic space,gastrosplenic space and spleno-renal space.5 cases of abdominal hematoma,of which all patients had the history of injury,were revealed as well-defined cystic masses located within inter-visceral space in upper abdominal cavity.12 cases of abdominal abscess had the history of abdominal surgery and fever after surgery.Conclusion:CT can provide the information of the position,shape and extent of peritoneal cystic lesions.They have high clinical value in diagnosis and treatment.