[Sweet's syndrome and aseptic abscess of the spleen].

Extra-cutaneous manifestations of neutrophilic dermatosis are exceptional and diverse: they consist of inflammatory infiltrates with neutrophil polymorphonuclears, without evidence of infectious agents. Localisations to the lung are the most frequently observed. A single observation of spleen involvement has been reported in a case of Sneddon-Wilkinson's disease. Herein we report the case of an aseptic splenic abscess during the course of a Sweet's syndrome.