Diagnostic capability of ultrasound versus CT for clinically suspected ovarian mass with emphasis on detection of adhesions.
Diagnostic capability was compared prospectively between ultrasound and CT using 25 consecutive cases of clinically suspected ovarian mass, which were found postoperatively to be comprised of 12 cases of ovarian neoplasm (of which 7 were malignant). 5 cases of endometriotic cyst, and 8 cases of nonovarian tumors including 4 cases of abscess. Accuracy for the histologic diagnosis with ultrasound and CT was 56 and 84%, respectively (P less than 0.05). With respect to discrimination of cystadenoma from cystadenocarcinoma, detection of intraperitoneal seedings, of paraaortic lymph node metastasis, and of ascites, either of the two imaging modalities was comparable to the other in their proficiency. In contrast to ultrasound, which permitted evaluation of adhesions to the uterus only in selected cases and hence was of limited use in this respect, CT was proficient in predicting the presence or absence of adhesions around the mass involving the uterus as well as other adjoining structures. The fact that CT is competent in detecting adhesions adds further value to CT as a powerful tool for the preoperative investigation of pelvic mass.
D003937:Diagnosis, Differential; D005069:Evaluation Studies as Topic; D005260:Female; D006801:Humans; D008207:Lymphatic Metastasis; D010051:Ovarian Neoplasms / Q000175:diagnosis*; D000267:Tissue Adhesions / Q000175:diagnosis; D014057:Tomography, X-Ray Computed; D014463:Ultrasonography