NCIt definition : A rare variant of mycosis fungoides, characterized by cerebriform lymphocytic infiltration
of the hair follicles of the head and neck. Most cases show mucinous degeneration
of the hair follicles, and are designated as mycosis fungoides-associated follicular
mucinosis. Cases without mucinous degeneration have been reported as pilotropic mycosis
fungoides. There is no difference in clinical presentation or outcome between mycosis
fungoides-associated follicular mucinosis and pilotropic mycosis fungoides. In the
recent WHO-EORTC classification, folliculotropic mycosis fungoides is the preferred
term for all cases.;