Testicular cancer, though relatively rare, is the most common cancer in men aged 15 to 35. Understanding the risks and symptoms can lead to early detection and treatment, significantly improving the prognosis. Risk Factors Several factors can increase the risk of developing testicular cancer: 1.       Age : Most common between ages 15 and 35. 2.       Family History : A family history of testicular cancer increases risk. 3.       Cryptorchidism (Undescended Testicle) : Men with a history of undescended testicle(s) are at higher risk. 4.       Race and Ethnicity : More common in white men compared to men of other races. 5.       HIV Infection : Men with HIV, particularly those with AIDS, are at an increased risk . Symptoms Recognizing the symptoms of testicular cancer can lead to early diagnosis and better outcomes. Common symptoms include: Lump or Enlargement in Either Testicle : Often painless, but sometimes associated with discomfort. Feeling of Heaviness in the