VOLUME DETERMINATIONS OF THE WHOLE PROSTATE AND OF ADENOMAS BY TRANSRECTAL ULTRASOUND IN PATIENTS WITH CLINICALLY BENIGN PROSTATIC HYPERPLASIA - CORRELATION OF RESECTED WEIGHT, BLOOD-LOSS AND DURATION OF OPERATION

Objective To study whether transrectal ultrasound (TRUS) volume determ inations of the whole prostate and of the adenomas alone correlate to resected weight, operation time and blood loss in patients operated up on with transurethral resection of the prostate because of presumed be nign prostatic hyperplasia(BPH).Patients and methods The whole prostat e and the transition zone, which corresponds to the adenomas, were mea sured separately in 159 patients with presumed BPH, pre-operatively an d 4 months past-operatively. Results The transition zone volume correl ated well with the resected weight (r = 0.91; P < 0.0001), the blood l oss (r = 0.67; P < 0.0001) and the operation time (r = 0.67; P < 0.000 1). Four months post-operatively a reduction of the total prostate vol ume was recorded which corresponded well with the resected weight (r = 0.91; P < 0.0001). Conclusion TRUS with high resolution 7 MHz probes successfully estimated the size of the whole prostate and that of the adenomas alone. The transition zone volume predicted the expected rese ction weight of adenomas and to some extent the duration of the operat ion and the blood loss. These calculations may be used for more accura te pre-operative planning. Together with its superior detection rate f or prostate cancer, TRUS seems to be a powerful tool in the preoperati ve morphological assessment of patients with prostatism.