Ovarian cancer: staging with CT and MR imaging.
OBJECTIVE
To evaluate ovarian cancer staging and tumor resectability with computed tomography (CT) or magnetic resonance (MR) imaging.


METHODS
Eighty-two women underwent CT (n = 43) or MR imaging (n = 50); eleven of these 82 underwent both. Imaging was performed within 4 weeks of surgical staging. Radiologic, surgical, and histopathologic findings were compared.


RESULTS
Overall staging accuracy was similar for CT and MR imaging (77% [33 of 43] vs 78% [39 of 50]). Evaluation of pelvic cancer extent was better with MR imaging than with CT. There was no difference in detection of abdominal disease. Most mesenteric and small-bowel implants were not detected with either CT or MR imaging. For CT, the positive predictive value for cancer nonresectability was 100% (three of three patients); the negative predictive value was 92% (37 of 40 patients). The positive and negative predictive values for MR imaging were 91% (10 of 11 patients) and 97% (38 of 39 patients).


CONCLUSIONS
While the staging accuracy of both CT and MR imaging is only moderate, prediction of tumor resectability is excellent.
D000008:Abdominal Neoplasms / Q000000981:diagnostic imaging / Q000473:pathology / Q000601:surgery; D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D003536:Cystadenocarcinoma / Q000000981:diagnostic imaging / Q000473:pathology / Q000556:secondary / Q000601:surgery; D005260:Female; D006801:Humans; D007414:Intestinal Neoplasms / Q000000981:diagnostic imaging / Q000473:pathology / Q000556:secondary; D007421:Intestine, Small / Q000000981:diagnostic imaging / Q000473:pathology; D008279:Magnetic Resonance Imaging; D008643:Mesentery / Q000000981:diagnostic imaging / Q000473:pathology; D008875:Middle Aged; D009367:Neoplasm Staging; D010051:Ovarian Neoplasms / Q000000981:diagnostic imaging / Q000473:pathology* / Q000601:surgery; D010386:Pelvic Neoplasms / Q000000981:diagnostic imaging / Q000473:pathology / Q000601:surgery; D010534:Peritoneal Neoplasms / Q000000981:diagnostic imaging / Q000473:pathology / Q000556:secondary; D011237:Predictive Value of Tests; D011446:Prospective Studies; D012680:Sensitivity and Specificity; D014057:Tomography, X-Ray Computed