Annular lichenoid dermatitis of youth: a separate entity or on the spectrum of mycosis fungoides? Case report and review of the literature

Journal of Cutaneous Pathology
Viktoryia KazlouskayaJacqueline M Junkins-Hopkins

Abstract

Annular lichenoid dermatitis (ALDY) is a rare dermatosis that is most often seen in children and young adults and is characterized by annular patches with raised borders, most frequently on the trunk and the groin. A distinct lichenoid tissue reaction involving the base of the rete, resulting in squared-off rete ridges, helps to differentiate this from other lichenoid dermatoses and mycosis fungoides (MF). Herein, we report an additional case of this condition in a 7-year-boy, whose biopsy exhibited the typical quadrangular rete alteration and also contained distinct aggregates of CD8+ lymphocytes, Langerhans cells and colloid bodies within the involved rete. A literature review with emphasis on the clinical and histopathological differential diagnosis reveals additional clinical features of ALDY to potentially help differentiate this entity from annular presentations of mycosis fungoides.

References

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Citations

Mar 10, 2016·Actas dermo-sifiliográficas·I Vázquez-OsorioE Rodríguez-Díaz
Jun 13, 2016·Actas dermo-sifiliográficas·D Romero-PérezB Encabo-Durán
Sep 23, 2016·Pediatric Dermatology·Stephen J MalachowskiMichael R Heaphy
Feb 28, 2020·Dermatologic Therapy·Jelena Stojkovic-FilipovicMilos Nikolic
Nov 20, 2021·The American Journal of Dermatopathology·Ana Letícia BoffMaristela Casagrande

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