title: [Diagnosis of early prostatic cancer. Correlation of in vitro echography and histopathologic mapping].
abstract: Sonographic detection of early prostatic carcinoma is based on the depiction of a hypoechoic focus. Thirty-seven correlations between in vitro sonographic patterns and pathologic mapping of prostatectomy specimens could be obtained in 26 patients. It was assumed that carcinomas smaller than 5 mm in diameter could not be visualized on sonography. Sonography identified 4 to 8 carcinomas greater than 5 mm in size (sensitivity, 50%). Of 18 hypoechoic foci, only 4 were carcinomas (positive predictive value, 22%). Among false positive results, 79% corresponded to normal prostatic tissue at pathology. The specificity of the hypoechoic focus as an indicator of cancer was 52% in this series. 36% of the carcinomas were located in the anterior half of the prostate. The carcinomas that were detected on sonography were all hypoechoic.
authors.forename: B D
authors.initials: BD
authors.lastname: Fornage
authors.forename: R J
authors.initials: RJ
authors.lastname: Babaian
authors.forename: P
authors.initials: P
authors.lastname: Troncoso
mesh_terms: D000328:Adult; D000368:Aged; D006801:Humans; D008297:Male; D008875:Middle Aged; D009367:Neoplasm Staging; D011468:Prostatectomy; D011471:Prostatic Neoplasms / Q000175:diagnosis* / Q000473:pathology; D014463:Ultrasonography
vernacular_title: Diagnostic du petit cancer prostatique. Corrélation entre l'échographie in vitro et le mapping histopathologique.