Figure 3From: Recurrent adult-onset hypophyseal Langerhans cell histiocytosis after radiotherapy: a case report Histological characterization of histiocytic cells. Sections stained immunohistochemically show diffuse reactivity within histiocytes for S100 (A) and monocyte and macrophage marker CD163 (B), and a membranous staining pattern for CD1a (C).Back to article page