espanolLa mucinosis folicular es un patron de reaccion tisular poco comun, se caracteriza histologicamente por la acumulacion de mucina en el epitelio folicular; puede presentarse en forma primaria/idiopatica o secundaria en asociacion con micosis fungoide/linfoma cutaneo de celulas T y otras enfermedades neoplasicas o inflamatorias. La clinica, los hallazgos histologicos y las tecnicas de biologia molecular orientadas a determinar la clonalidad de celulas T no son definitivos en la diferenciacion de una forma u otra. A continuacion, presentamos un caso y tres escenarios de discusion con el proposito de que el lector pueda entender e interpretar apropiadamente el significado de la mucinosis folicular. EnglishFollicular mucinosis is a rare tissue reaction pattern histologically characterized by the accumulation of mucin in the follicular epithelium, it can occur in primary/idiopathic or secondary form in association with mycosis fungoides/cutaneous T-cell lymphoma and other neoplastic or inflammatory diseases. The clinical manifestations, the histological findings and the molecular biology techniques aimed at determining the clonality of T cells are not definitive in the differentiation of one form or another. Here we present a case and three discussion scenarios in order that the reader can understand and interpret appropriately the meaning of follicular mucinosis.