There may be no symptoms. Symptoms that may occur can include:
Discomfort or pain in the testicle, or a feeling of heaviness in the scrotum
Pain in the back or lower abdomen
Enlargement of a testicle or a change in the way it feels
Excess development of breast tissue (gynecomastia), however, this can occur normally in adolescent boys who do not have testicular cancer
Lump or swelling in either testicle
Symptoms in other parts of the body, such as the lungs, abdomen, pelvis, back, or brain, may also occur if the cancer has spread.
Cancer Term:(malignant neoplasm) is a class of diseases in which a group of cells display uncontrolled growth, invasion that intrudes upon and destroys adjacent tissues, and sometimes metastasis, or spreading to other locations in the body via lymph or blood. These three malignant properties of cancers differentiate them from benign tumors, which do not invade or metastasize. Cancer-ar-foundation