[Volumetric correlations of prostatic adenoma by transrectal ultrasonography]

Estimation of prostate volume is one of the key elements in the study and management of both prostate benign diseases and prostate cancer. Of the available techniques, transrectal ultrasound presents greater reliability in prostatic imaging due to its degree of resolution. The present study conducted in 40 patients undergoing suprapubic adenectomy piedes with the echographic dimensions and 14 different volumetric formulae obtained by the multiple combination of the three prostate axis. The two best correlations are obtained when the cross-sectional measurement is combined with the anteroposterior (r = 0.84..0.83), and the worse when the longitudinal measure is used in isolation or combined with the anteroposterior one (r = 0.64..0.43). The exact formula is the ellipsoid [formula: see text] Contrary to what could be expected, the size of the "internal gland" (cross-sectional and anteroposterior) scarcely correlates to the adenoma weight, both with regard to the main axes (cross-sectional, r = 5.25; anteroposterior, r = 0.28) and the theoretical volume (r = 0.69).