Clinical variants of mycosis fungoides in a cohort.

Introduction: Mycosis fungoides (MF) is the most common primary skin T-cell lymphoma, which is characterized for a heterogeneous clinical expressivity.

Objective: To report clinical variants and sociodemographic characteristics in patients with MF under the care of a dermatological hospital.

Methods: 290 patients with MF clinical and histopathological diagnosis attended to over the course of 11 years were included. Sociodemographic description of patients was made, who were classified according to clinical and histopathological variants.

Results: MF was recorded in 57.9 % of women and 42 % of men. The most common clinical variant was the classic type in 46.2 %; dyschromic variants accounted for 35.2 %, out of which hypopigmented MF was the most representative (17.6 %); poikilodermatous MF accounted for 4.1 %, and folliculotropic, for 3.1%. The papular variant occurred in six patients (2.1 %), the single-plaque variety in three (1%), and the ichthyosiform, syringotropic and granulomatous slack skin varieties occurred in one patient each. The granulomatous variant was found in 0.7 %, and 1.4 % had erythroderma.

Conclusions: The most common MF clinical variant was classic plaque stage, followed by dyschromic variants. Other clinical variants accounted for 18.6 %.