Testicular cancer occurs in the testicles (testes), which are located inside the scrotum, a loose bag of skin underneath the penis.
The disease affects teens and younger men, particularly those aged between 15 and 35. However, it can occur at any age and usually affects only one testicle.
If you are experiencing any pain, swelling or lumps in your testicle accompanied by these symptoms lasting longer than two weeks, immediately consult a doctor. Early detection can help save lives.
Reference: https://www.mayoclinic.org/