UroToday - Residual Tumor Potentially Left Behind After Local Ablation Therapy in Pr...

Clipping

There was 1 positive core in 66 cases. On average 13.9% of each positive core was involved with tumor. The mean number of separate tumor nodules per radical prostatectomy was 2.9. In 65 radical prostatectomy specimens there was some tumor contralateral to the positive biopsy side. Total tumor volume in the radical prostatectomy contralateral to the positive biopsy side averaged 0.2 cm(3) (largest 1.3). In 23 cases contralateral tumor volume was greater than biopsy positive side tumor volume. There were 13 cases in which more than 0.5 cm(3) cancer was contralateral to the positive biopsy and 7 with predominantly anterior tumor. Volume contralateral to positive biopsy side could not be predicted by the number of positive cores (1 vs 2) or maximum percent of the core involved. Gleason pattern 4, extraprostatic extension or positive margins were seen contralateral to the positive biopsy side in 13, 1 and 2 cases, respectively.