During a workup for infertility, a 34-year-old man is noted to have a solid tumor in the anterior aspect of his right testis. What is the most likely diagnosis?: (A) Torsion of the testis, (B) Cyst of the epididymis, (C) Lipoma of the cord, (D) Cancer of the testis
Answer is D. Non-hematogenous testicular tumors are divided into two categories - germ cell tumors (seminoma, non-seminoma, i.e., embryonal, choriocarcinoma, teratoma, teratocarcinoma, yolk sac tumors) and non-germ cell tumors (Leydig cell or Sertoli cell). There is no mass within the testis with torsion. Epididymitis presents within painful tender testis.