Well my mouth biopsy came back negative - great news! However, my husband was not so fortunate.  A prostate biopsy came back positive for aggressive prostate cancer.  Why?  Causes of prostate cancer are not defined.  There is no history in my husband's family and he had absolutely NO symptons.  I had insisted he go for a routine check-up.  Now we wait!  The doctor is referring us to a specialist, but told us an immediate prostatectomy was required.  Learning the news made it a tough weekend on everyone.  We now have another fight on our hands!