testicular self-examination (TSE), a procedure recommended by the National Institutes of Health for detecting tumors or other abnormalities in the male testes. The TSE is conducted in four simple steps, starting by standing in front of a mirror and looking for any swelling on the skin of the scrotum. One testicle may appear larger than the other, and one may hang lower, which is usually normal. Next, each testicle is examined with both hands, placing the fingers under the testicle while the thumbs are placed on top. The testicle is then rolled gently between the thumbs and fingers. In the next step the epididymis, a normal cordlike structure on the top and back of each testicle, should be found. A small pea-sized lump is felt for on the front or side of a testicle. The lump is usually painless. TSE should be performed once a month, usually after a warm bath or shower because the heat causes scrotal skin to relax, thereby increasing the chances of detecting any tissue abnormality. Testicular cancer almost always occurs in only one testicle. It is highly curable when detected at an early stage.