What is testicular cancer?

Testicular cancer is when the cells of your testicle grow in an abnormal way to form a lump (tumour). The cancer can affect how the testicles work normally. Sometimes testicular cancer cells spread to lymph glands at the back of the abdomen, the chest or neck.

Testicular cancer is rare, but it’s the most common cancer in young men aged between 15 and 34. More than 170 men are diagnosed with testicular cancer every year in Ireland.

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