A case of patch granuloma annulare with CD68-negative, CD163-positive M2 macrophages infiltration in an interstitial pattern

Abstract

Patch granuloma annulare is a rare type of granuloma annulare. Histopathologically, patch granuloma annulare shows interstitial infiltration of histiocytes. In our case, immunohistochemical analyses demonstrated CD68-negative, CD163-positive M2 macrophages infiltration in an interstitial pattern.