<prompt> 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?Torsion of the testisCyst of the epididymisLipoma of the cordCancer of the testis  <response>: 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. 