[Follicular mycosis fungoides, comedo-like and cystic].

Follicular mycosis fungoides is an infrequent variant of mycosis fungoides. It has classically been defined by the presence of an atypical lymphoid infiltrate around and in the follicular epithelium with little or no epidermotropism, and no follicular mucin deposits. The fact that there are cases with epidermal involvement and/or follicular mucinosis means that some uniform diagnostic criteria are necessary. We describe two cases of follicular mycosis fungoides with follicular mucinosis and with varying degrees of associated epidermotropism.