This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Skin Cancer, Subject name: Skin
[{'content': 'Treatment of choice for mycosis fungoides in tumor stage is? \nSelect and explain. \nA. PUVA therapy, B. Chemotherapy, C. Electron beam therapy, D. Topical corticosteroids', 'role': 'user'}, {'content': "Answer: B \nExplanation: Ans. is 'b' i.e., Chemotherapy Treatment of mycosis fungoides (Cutaneous T-cell lymphoma)Patch stage (good response) (stage-1)Potent topical corticosteroidsUltraviolet BPsoralens + UVA (PUVA)Plaque stage (moderate response) (stage-2)Electron beam therapyPUVATopical nitrogen mustardTumor stage (Poor response) (stage-3)Low dose radiation for individual lesionsChemotherapy", 'role': 'assistant'}]