en Surgery Surgery case report case report A 70 year old male presented with right lower quadrant pain and anorexia for about 72 hours prior to hospital admission. He underwent laparotomy with impression of acute appendicitis. The operative finding was an inflamed tumoral appendix without appendicular base involvement, and appendectomy was done. The patient had an uneventful post-op course. Due to the pathology report of prostatic carcinoma he underwent cystoscopy and biopsy of prostate on the 4th post-op day. Histopathology of the appendix was consistent with metastatic adenocarcinoma of the appendix with prostatic origin. Histopathology of the prostatic specimen was consistent with high grade prostatic adenocarcinoma. Appendix, Adenocarcinoma, Prostate. 263 265 http://mjiri.iums.ac.ir/browse.php?a_code=A-10-298-151&slc_lang=en&sid=1 B ARYA 20031947532846003762 20031947532846003762 Yes *From the Departments of General Surgery Golestan University of Medical Sciences, Gorgan, f.R. Iran. B GHAZI-MOGHADAM 20031947532846003763 20031947532846003763 No Urology Golestan University of Medical Sciences, Gorgan, f.R. Iran. MJ GOOLALIPOUR 20031947532846003764 20031947532846003764 No Histology and Embryology Golestan University of Medical Sciences, Gorgan, f.R. Iran. R AZARHOOSH 20031947532846003765 20031947532846003765 No Pathology, Golestan University of Medical Sciences, Gorgan, f.R. Iran.