Diagnosis of gynecologic pelvic masses by gray scale ultrasonography: analysis of specificity and accuracy.

A retrospective analysis of 251 proven cases of gynecologic masses was undertaken. Accuracy of gray scale sonography in determining the existence, size, location, and consistency of pelvic masses was approximately 91%. This is slightly higher than previously reported and could reflect increased accuracy of gray scale ultrasonography. Errors were primarily due to misinterpretation of loops of bowel, small lesions (2 cm or less in diameter), or poor technique. Since ultrasonograms are nonspecific, only rarely could a specific histologic diagnosis be made without accurate clinical information.