<prompt> A 27-year-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>: This patient has retroperitoneal lymph node mass, hence its stage II. Its more than 5 cm thus its stage He.Treatment of stages for HC and beyond is the same for both seminomas nonseminomas i.e. chemotherapy after inguinal orchiectomy 