This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Tumours of skin, Subject name: Dental
Mycosis fungoides, which is not true 
Select and explain. 
A. Most common cause of cutaneous lymphoma, B. Pautier's Microabscess, C. Indolent course & good prognosis, D. Erythroderma seen & spreads to peripheral circulation
C: Indolent course & good prognosis
Answer: C: Indolent course & good prognosis 
Explanation: Mycosis fungoides is a cutaneous T cell lymphoma Etiology: - Unknown, sometime HTLV I virus- It is MC cutaneous lymphoma C/F: Characterized by polymorphic patches and plaques usually seen on limb, the breast and buttocks It is characterized by subtle, fine, scaly and atrophic erythematous patches. Histological findings : 1. Sezary cells - Sezary cell are malignant lymphocytes with increased cell size and convoluted nucleus aka Cerebriform nucleus 2. Epidermo tropism - affection to move towards the epidermis3. Pautrier's microabscess Prognosis: poor (fatal) T/t - Radiotherapy - full skin electron beam therapy