Interstitial mycosis fungoides: A rare presentation of mycosis fungoides with overlapping granulomatous and folliculotropic features.
J Cutan Pathol
; 51(6): 459-467, 2024 Jun.
Article
em En
| MEDLINE
| ID: mdl-38443749
ABSTRACT
BACKGROUND:
Interstitial mycosis fungoides (IMF) is a rare subtype of mycosis fungoides (MF) characterized by atypical lymphocytes infiltrating the reticular dermis between collagen bundles with limited epidermotropism and variable granulomatous features.METHODS:
Retrospective single institution review of 31 cases of IMF including clinical characteristics, disease course and pathological features.RESULTS:
Our cohort was predominately male (19; 61%, MF 1.61) with a mean age at diagnosis of 43 years (range 11-85), mean signs/symptoms duration of 7 years prior to diagnosis, and 6 years mean follow-up duration. Clinically, patients often exhibited symmetric ill-defined patches/plaques involving intertriginous regions with tan-yellow hyperpigmentation and follicular-based papules, wrinkling, and alopecia. Lymphadenopathy was noted in seven patients. Fifteen (52%) patients were in near or complete clinical remission at the latest follow-up. T-cell receptor gene rearrangement was positive in 23/24 (96%) cases. Histopathologically, atypical cells were small-medium, CD4+ (29; 94%) or rarely CD4+/CD8+ (1; 3%) lymphocytes infiltrating the reticular dermis with thickened collagen bundles (27; 87%), multinucleated giant cells (12; 39%), and often tracing along adnexa with subtle folliculotropism (12/20; 60%).CONCLUSIONS:
Our study demonstrates IMF is an indolent subtype of MF with distinct features, including frequent granulomatous and subtle follicular involvement resulting in alopecia.Palavras-chave
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Base de dados:
MEDLINE
Assunto principal:
Neoplasias Cutâneas
/
Micose Fungoide
Idioma:
En
Ano de publicação:
2024
Tipo de documento:
Article