This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Non Hodgkin Iymphoma, Subject name: Pathology
Mycosis fungoides is: 
Select and explain. 
A. Fungal infections of skin, B. Leukemia, C. Exfoliative erythroderma, D. Cutaneous lymphoma
D: Cutaneous lymphoma
Answer: D: Cutaneous lymphoma 
Explanation: Mycosis fungoides is a T cell lymphoma affecting skin which can evolve into generalized lymphoma. Histological hallmark: Sezary Lutzner cells which are helper T cells forming band like aggregates in superficial dermis and have cerebriform contourQ. May invade epidermis as single cells and small clusters called as Pautrier microabscessesQ