Figure 1From: Hyper-IgG4 disease: report and characterisation of a new disease Mesenteric mass. Patient 3 (index case): (a, b) fibrosis, lymphoid aggregates and plasma cells (haematoxylin and eosin (a) × 100, (b) ×400); (c) CD138-positive plasma cells; (d) IgG4-positive plasma cells.Back to article page