Abstract
The neutrophil mobility in patients with granuloma annulare, necrobiosis lipoidica, and sarcoidosis was tested using both in vivo and in vitro techniques. Use of a skin window chamber for measurement of chemotaxis in vivo demonstrated defective neutrophil migration in each group. This contrasted with the finding that, in vitro, chemotaxis toward casein and endotoxin-activated sera was normal. The importance of this dissociation is discussed. Abnormal neutrophil accumulation at sites of inflammation may be of importance in the pathogenesis of these granulomatous disorders.
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