Langerhans Cell Histiocytosis: Letterer - Siwe Disease Interest of Dermatological Signs for Diagnosis

Langerhans cell histiocytosis is defined as a clonal proliferation of Langerhans phenotypic-like cells. Letterer-Siwe disease is the most common and serious of these entities, affecting mainly infants up to two years of age. We present a case of this rare disease, diagnosed after dermatological examination, highlighting its typical aspects.