Trichoscopic findings in folliculotropic mycosis fungoides: case report

Abstract

Folliculotropic mycosis fungoides (FMF) represents 10% of all mycosis fungoides cases and even though supraciliary lesions and alopecia are characteristic, there are few published papers documenting trichoscopic findings in these patients. We report the case of a 50-year-old man who presented to our department with FMF stage IB. Clinical findings included disseminated erythematous patches and plaques with a fine white-grayish scale, madarosis, and multifocal patchy alopecia of the scalp. Trichoscopy revealed a decreased number of pilosebaceous units, dilated follicular openings, black dots, vellus, and dystrophic hairs. Examination of the scalp presented widespread white scaling and areas with dotted and spermatozoa-like vessels. A revision of the literature showed that dilated follicular openings, black dots, and scale were less frequent findings in FMF, and dystrophic hairs were more common in advanced FMF. In the future, trichoscopic evaluation might guide differential diagnosis and define the threshold to biopsy lesions to identify early disease.

Keywords

• Primary cutaneous T-cell lymphoma. Mycosis fungoides. Folliculotropic mycosis fungoides. Alopecia. Trichoscopy. Dermoscopy