Evaluation of endorectal ultrasonography in the diagnosis of prostatic cancer using a high-frequency sectorial intracavitary probe
Devonec, M.; Codas, H.; Provensal, B.; Chapelon, J.Y.; Dubernard, J.M.; Cathignol, D.
Annales d'Urologie 21(1): 17-22
1987
ISSN/ISBN: 0003-4401 PMID: 3551788 Document Number: 296303
Endorectal ultrasonography was evaluated in the diagnosis of prostatic cancer, using a high frequency (7,5 MHz) mechanical sectorial endocavitary probe developed by the authors. In a first study, sonograms from a series of 213 patients were interpreted retrospectively without any knowledge of the clinical or pathological findings. Specificity for the diagnosis of cancer (true non-malignant/total non-malignant) reached 79%, whereas sensitivity (true malignant/total malignant) was only 48%. Pathology was available for 132 patients. In a second study, 72 ultrasonically guided biopsies were performed in patients presenting either with a suspicious induration without nodule (47 cases) or a palpable nodule (25 cases). Good quality biopsy specimens, and absence of complication were remarkable. However, the 10 cancer cases (5 diagnosed in each group) did not show sonographically clearly different from the remaining adenoma, prostatitis and normal cases.