The most observable symptom of testicular cancer is the abnormal mass of tissue which arises from the testicles contained within the scrotum. There are two major categories of testicular cancer:
1. Germ cell tumors – about 95% of this cancer cases arise from germ cells (spermatocytes). This type of tumor is highly aggressive and metastatic but is mostly curable. Germ cell tumors are further classified as seminoma, spermatocytic seminoma, embryonal carcinoma, yolk sac tumor, choriocarcinoma, and teratoma.
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