Testicular tumors are the most common tumors in men aged 15-35 years. However, monthly self-examinations coupled with knowledge of testicular tumor symptoms can help patients to detect and seek timely diagnosis in the early and curable stages of the disease. Symptoms of testicular tumors include a small painless lump in the testicle, a feeling of heaviness in the scrotum, dull pain in the lower abdomen or groin, changes in sensation in the testicle, and sudden bleeding or fluid accumulation in the scrotum. Early detection and diagnosis of testicular tumors is based on the patient’s monthly self-examination. The best time to check is after a hot shower, as the scrotum has relaxed under the heat, making the examination more convenient. The National Cancer Institute recommends the following steps for self-examination: Stand in front of a mirror and observe any changes in the appearance of the scrotum or any swelling of the skin. Use both hands to examine each testicle. Place your index and middle fingers under the testicle and your thumb above it. Gently touch the testicles between your fingers. Don’t be alarmed when you find that the testicles are not equal on both sides; that’s normal. Above the testicles, you can feel the soft, tube-like structure that is the epididymis. Only by understanding the epididymis will you not panic by considering it as a suspicious testicular mass. Cancerous testicular masses are usually located on the side of the testicle and occasionally occur above it. If you find a lump, prompt medical attention is the best option. Of course it is possible to find out after a visit that it was a false alarm, but if it is a cancerous lump and is not treated promptly, the tumor will progress very quickly. Remember that early testicular tumors are completely curable, and usually testicular tumors occur unilaterally and patients can still maintain their sex life and fertility after surgery.