Prostate cancer is a common malignancy in males. It rarely occurs before the age of 50 years and the incidence increases through the ninth decade of life. 1 Ninety percent of the new cases of prostate cancer are expected to be diagnosed at local or regional stages, for which 5-year relative survival approaches 100%. 2 Advanced T stage is characterized by extension of the tumor outside the prostatic capsule to invade nearby structures such as the bladder, the seminal vesicles, the ureters and the pelvic side walls. 1 Further local extension is rare. We are reporting a patient with locally advanced prostatic carcinoma who presented for the first time by a perianal swelling. We believe this is the first case to be reported in literature.

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