<prompt> Most radiosensitive testicular tumor isSeminomaTeratomaLymphomaSertoli cell tumor  <response>: Ans. a Seminoma. Ref. LB, 25th1384Radiosensitive tumors are seminoma, Ewings sarcoma, Hodgkins lymphoma, few gynaecological malignancies and medulloblastoma.Radiotherapy -is the treatment of choice for Oral cavity, lip, tongue, cheek Nasopharynx, Oropharynx and hypopharynx Nasal cavity Larynx Skin cancers except melanoma Cervix Bladder except Tl Testis - Seminoma Hodgkins disease - early disease NHL - early disease Medulloblastoma following surgery Retinoblastoma Astrocytomas grade 3 and 4Radiosensitivity of different tumorsHighly radiosensitiveModerately radiosensitiveRelatively resistantHighly resistantLymphomaSeminomaMyelomaEwings sarcomaWilms tumorsSmall cell lung cancerBreast cancerBasal cell carcinomaMedulloblastomaTeratomaOvarian cancerSquamous cell lung cancerRCCRectal carcinomaBladder carcinomaSoft tissue sarcomaCervical cancerMelanomaOsteosarcomaPancreatic Ca 