文本框: THE DIAGNOSTIC VALUE OF CT OF PELVIC MASSES IN CHILDREN (A REVIEW OF 50 CASES) Sun Guoqiang, Wang Xiaoman, Zeng Jingjing, et al. Department of Radiology, Beijing Children’s Hospital Affiliated to Capital University of Medical Sciences Beijing, China Objection: To retrospectively analyze CT appearances and diagnostic value of pelvic masses in children in 50 patients proved by operation and pathology. Methods: 50 cases of pelvic masses were performed axial plain CT scan. These were 32 Cases of in our series additional underwent contrast-enhanced CT scan. These were 31 girls and 19 boys. Age range from 2 hours to 14 years, mean 5.8 years, The pelvic masses were: 27 germ cell tumors, 7 rhabdomyoscarcoma (RMS), 4 tumors of neural origin, 2 hydrometrocolpos, 1 pelvic lipomalosis, 1 ureterocele in bladder, 1 non-Hodykin’s lymphoma (NHL), 1 ectopic hyperplasia of prostate in pelvic,1 appendiceal abscess, 1 prostatic abscess, 1 megabladder1 mesenteric cyst, 1 duplication of the small intestine, 1 leiomyosarcoma. Results: 46 of 50 cases were correctly diagnosed by CT scan before surgery (92%), 4 cases were mistaken by CT scan (8%), 31 cases were benigns masses (62%), 19 cases were malignant masses (38%), 17 of 19 cases with malignant masses were solid one (89.5%). 29 of 31 cases with benign masses were mixed density masses and cystic masses. Conclusion: CT scan showed to best finding of the size, density, shape, location of pelvic masses and its relationship to pelvic organs, musculature and bones. in our hospital, pelvic CT is the most recent technique utilized in the diagnosis of patients with pelvic masses. To investigate a pelvic mass we suggest that US is used first followed by CT. The accurate diagnosis rate of pelvic mass in children should be improved before operation. 0902