A primary or metastatic malignant neoplasm involving the male reproductive system. Representative examples include prostate carcinoma, penile carcinoma, testicular seminoma, and testicular embryonal carcinoma. The disease is MONDO_0005836 (male reproductive organ cancer). Also known as: cancer of male reproductive organ, male genital cancer, malignant Male reproductive system neoplasm, malignant Male reproductive system tumor, malignant Male reproductive system tumour, malignant male reproductive organ neoplasm, malignant neoplasm of Male reproductive system, malignant neoplasm of male genital organ.