IgG4-Related Disease, the Malignancy Mimicker: Case Series from Bahrain

<div>Histological examination of ampullary mass in case 4. (a) Histological examination revealed villotubular structures lined by dysplastic epithelium consistent with adenoma. (b) High-power examination revealed numerous clusters of plasma cells in the intervening lamina propria.</div>

Case Reports in Rheumatology

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Figure 6

Figure 6: IgG4-Related Disease, the Malignancy Mimicker: Case Series from Bahrain 