What Causes Prostatomegaly And Irregular Wall Thickening Of Urinary Bladder?

Hi, my grand father age 75 and he got mild irregular wall thickening of urinary bladder and moderate prostatomegaly identified after getting ct scan results. Why this happened and what will be the future effects because of this problem? Our local doctors got doughty send the operated prostate gland to test to check whether it s prostate cancer. But the liver, kidney and other parts are normal and there is no change in the size and everything is normal according to ct scan and other results.