Diagnostic value of CT for appendiceal mucinous cystadenoma

Objective:To discuss the CT performance of appendiceal mucinous cystadenoma for improving the preoperative diagnosis.Methods:Seven cases of appendiceal mucinous cystadenoma confirmed by pathology were collected and evaluated.The relevant references were also reviewed.Results:No correct diagnosis was made preoperatively for all the seven cases.The relatively characteristic features of CT included:oval or round cystic mass with neat edge in the right iliac fossa,and long oval mass on MPR in all 7 cases.Uniform thin wall was seen in 4 cases.3 cases with uneven wall thickness,papillary lesions and septation,dynamic enhanced scanning showed moderate enhancement.1 case was seen with appendix wall thickening,and fuzzyness of surrounding fatty tissues.Peritoneal multiple cystic mass and ascites were seen in 1 case.Conclusion:When cystic mass in the right iliac fossa is found by CT,the possibility of appendiceal mucinous cystadenoma should be considered and surgeons should be reminded to avoid iatrogenic peritoneal pseudo-myxoma.