Elastophagocytosis: a feature of resolving Sweet's syndrome.

We report the case of a patient with atypical Sweet's syndrome characterized by an annular erythema that showed consumption of elastic fibres by giant cells and histiocytes. Although the lesions were found on sun-exposed sites and the first biopsy demonstrated extensive elastophagocytosis, our patient did not have photodamaged skin clinically. A repeat biopsy 5 weeks later demonstrated an abundant collection of neutrophils supporting the diagnosis of Sweet's syndrome. To our knowledge, an elastolytic granulomatous reaction pattern has not been previously reported in Sweet's syndrome.