<prompt> A 27-years old man presents with a left testicular tumor with a 10 cm retroperitoneal lymph node mass. The treatment of choice is:RadiotherapyImmunotherapy with interferon and interleukinsLeft high inguinal orchiectomy plus chemotherapyChemotherapy alone  <response>: Ans. c Left high inguinal orchiectomy plus chemotherapyGerm Cell Tumor Staging andTreatmentExtent of DiseaseSeminomaNon seminoma Testis only, no vascularlymphatic invasion T1Radiation therapyRPLND or observation Testis only, Vascularlymphatic invasion T2, Tunica albuginea T2, Involvement of spermatic cord T3 Scrotum T4Radiation therapyRPLNDNodes 2cmRadiation therapyRPLND or chemotherapy often followed by RPLNDNodes 2-5cmRadiation therapyRPLND-adjuvant chemotherapy or chemotherapy followed by RPLNDNodes 5cmChemotherapyChemotherapy, often followed by RPLNDDistant metastasesChemotherapyChemotherapy often followed surgery biopsy or resection 