CT-guided biopsy of pelvic masses.

CT-guided fine-needle puncture (FNP) was carried out in 74 patients with pelvic masses and resulted in a correct diagnosis in 36/45 patients (80%) with malignant disease. FNP was true-positive in 66.7% and false-negative in 20%. In benign and inflammatory pelvic space-occupying lesions, FNP confirmed the suspected CT diagnosis in all cases by cytology and bacteriology. CT-guided puncture should always be used complementary to CT when a mass of unclear etiology is present.