Eritema elevatum diutinum

El eritema elevatum diutinum (EED) es una variante de vasculitis leucocitoclasica de caracter cronico y baja prevalencia. La asociacion con trastornos hematologicos, autoinmunes, neoplasias e infecciones es frecuente. Se manifiesta con papulas eritematoviolaceas de consistencia variable, localizadas en cara extensora de extremidades sobre las superficies articulares. En el estudio histologico de las lesiones iniciales encontramos infiltracion neutrofilica de la pared de los vasos de la dermis y leucocitoclasia; en la etapa tardia la presencia de areas de fibrosis es caracteristica. Presentamos una paciente de sexo femenino con antecedentes de lupus eritematoso sistemico con lesiones compatibles con ambas fases de esta dermatosis. Palabras clave: vasculitis leucocitoclasica, eritema elevatum diutinum, lupus. Dermatol. Argent. 2016, 22 (3): 158-160 Erythema elevatum diutinum: two evolutionary instances Erythema elevatum diutinum is a variant of leukocytoclastic vasculitis, chronic and with low prevalence. The association with hematological disorders, autoimmune diseases, cancers and infections is common. It manifests with erythematous papules of varying consistency, located on the extensor surfaces of the extremities predominately on the joints. In the histological study of initial lesions we found neutrophilic infiltration of vessel walls of the dermis and leukocytoclasia; at late stage the presence of fibrotic areas is characteristic. We present a female patient with a history of systemic lupus with lesions compatible with both phases of this dermatosis. Key words: leucocitoclasic vasculitis, erythema elevatum diutinum, lupus. Dermatol. Argent. 2016, 22 (3): 158-160