CT Manifestations and diagnostic value of abdominal-pelvic non-organic cystic lesions in newborns and infants

Objective To evaluate CT appearances and diagnostic value of abdominal-pelvic non-organic cystic lesions in newborns and infants proved by operation and pathology.Methods 29 cases were performed with plain CT scan,2 cases of them underwent contrast-enhanced CT scan,5 cases underwent multi-planar reconstruction(MPR),2 cases were performed MRI.The clinical manifestations,gender,location and CT signs of 29 cases were retrospectively analyzed.Results There were 6 cases of gastrointestinal duplication,2 cases of mesenteric cyst,1 case of omental cyst,5 cases of ovarian cyst,3 cases of cystic teratoma,1 case of lymphangioma,9 cases of abscess around the appendix and in pelvic,and 2 cases of meconium peritonitis.There were 16 males and 13 females,17 cases of which located in the right lower abdominal cavity and pelvis,Most of 29 cases were low-density mass with clear border and regular shape,76%(22/29) without separation,52%(15/29) with thin-walled,59%(17/29) with calcification in CT imaging.Conclusion Different abdominalpelvic non-organic cystic lesions in newborns and infants can have similar CT findings,but a more accurate qualitative or prompt diagnosis can be made based on clinical history,gender,lesion location,etc.