Most of the male reproductive system – the penis, scrotum, and testes – is outside the abdomen. Consequently, symptoms of disorders in these structures are usually obvious at an early stage. Such symptoms should not be ignored out of embarrassment since most genital disorders can be cured by prompt treatment. In this section, disorders that affect the epididymis (the coiled tube that carries sperm away from each testis) and the testes are described first. These disorders range from epididymal cysts, which are harmless collections of fluid, to cancer of the testis.