Sezary syndrome
noun
variants:
or Sezary's syndrome \ ˌsā-zä-ˈrēz- 
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Medical Definition of Sezary syndrome
: mycosis fungoides of a variant form that is characterized by exfoliative dermatitis with intense itching and by the presence in the blood and in the skin of numerous large atypical mononuclear T cells with irregularly shaped nuclei