[Transient eosinophilic nodulomatosis (author's transl)].

The case report describes a boy of six years presenting with asymptomatic nodules, asymmetrically distributed over the whole body. The lesions came in crops. Each lesion evolved over approximately 3 weeks and they healed without sequelae. The only other clinical feature was the presence of generalized lymphadenopathy. Histologically, the lesion was essentially dermal and composed by a diffuse cellular infiltrate predominantly made of eosinophils, mixed with a few normal histiocytes. The latter did not show any typical Langerhans granules. Various disorders featuring either nodules or eosinophilic infiltrates, or both, are discussed. Taking together all the clinical and histological data, it is reasonable to suggest that this disorder of transient eosinophilic nodulomatosis is not a well-defined entity and remains without a definite etiology.