There is a hypoechoic right testicle which is not completely descended into the right hemiscrotum. Multiple areas of increased echogenicity represent microcalcification. Contrasted with the normal left testicle, the differences in echogenicity and size become more apparent. Seminoma in a cryptorchid right testicle. Testicular carcinoma is the most common malignancy in youn men with 2,500 new cases annually.
Seminomas are the most common germ cell tumor.
Seminomas are divided into classic, anaplastic, and spermatocytic types depending upon hiostologic features. Seminomas have a 4-5 times greater incidence in the crytorchid testicle. Seminomas tend to have a homogeneous hypoechoic look to them. Rarely do seminomas contain calification. Lymphomas of the testicle occur and are usually hypoechoic diffusely, but may have more focal heterogeneous hypoechogenicity.