A 55 Year Old Man Consults His GP for Trouble

A 55 year old man consults his GP for trouble with urination.He has difficulty both starting and stopping his stream.He often has to get up 2-3 times per night to urinate.The physician palpates a nodular prostate,and a needle biopsy is performed,to rule out carcinoma.A representative section is shown in the accompanying photomicrograph.Which one of the following is the best diagnosis?

A) Acute prostatitis
B) Chronic prostatitis
C) Benign prostatic hyperplasia (BPH)
D) Prostatic adenocarcinoma
E) Prostatic intraepithelial neoplasia