Primary SRCC of the prostate is even more rare, with roughly 60 cases reported in the literature [7]. In our patient with peritoneal carcinomatosis and rectal adhesions, a primary gastrointestinal malignancy was considered. His immunohistochemistry staining was positive for PSA and Ber-EP4 making SRCC of prostatic origin the most likely case. However, given there were no standardized treatment modalities for primary SRCC of the prostate, we pursued standardized treatment for prostate adenocarcinoma [7]. The gene discussed is KLK3; the disease is prostate adenocarcinoma.