Diffuse Alveolar Hemorrhage in Systemic Lupus Erythematosus: Histopathologic Features and Clinical Correlations

Figure 5

Area of lung with abundant hemosiderin-laden macrophages, singly and in clusters. (a) Prussian Blue stain confirming the presence of hemosiderin (blue). (b) CD68 immunostain demonstrating that the cells are macrophages (brown).

(a)

(b)