Regular testicular examination should be a regular part of every adult man’s health program. This suggestion is important because testicular cancer is one of the more common tumors seen in men, especially between the ages of 20 and 40. All men should learn how to self-examine and check themselves every month. Only by becoming familiar with the normal anatomy of the testicles can they detect any changes that may occur. The test should be done in a comfortable position, such as in the shower or bathtub. Men should monitor the shape and position of the testicles. On the outer or lateral surface, they can feel a groove called the lateral sulcus between the testicle and the epididymis, which joins it. The testicle should feel firm but not too hard. Untreated testicular torsion can result in the testicle being so badly damaged that it needs to be surgically removed. In such cases it is important to seek early medical help within 4 to 6 hours of the onset of pain, as surgery can save the testicle by untwisting it and restoring blood flow. To prevent this from happening again, the testes are usually fixed to the wall of the scrotum. This should be done on the opposite side, as the same abnormality usually exists on the other side. In some cases, there is twisting. All cases of acute testicular pain should be referred to a urologist.