This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Skin
[{'content': 'Which of the following is not a criteria for Sezary syndrome? \nSelect and explain. \nA. Erythroderma, B. Sezary cell count >5% in buffy coat, C. Sezary cell count>20% in peripheral smear, D. Absolute sezary cell count>2000/mm3', 'role': 'user'}, {'content': "Answer: D \nExplanation: Sezary syndrome refers to the presence of a clinical triad consisting of .erythroderma, .peripheral lymphadenopathy and .atypical mononuclearcells (Sezary cells) comprising 5% or more of peripheral blood lymphocytes on a buffy coat smear (B1), or more than 20% of total lymphocyte count or a total Sezary count of more than 1000 x109/L (B2). It is a variant of cutaneous T cell lymphoma with aggressive clinical course. Ref: Rook's textbook of dermatology, Edition-8, Page-57.17.", 'role': 'assistant'}]