Immune Complex Mediated Glomerulonephritis with Acute Thrombotic Microangiopathy following Newly Detected Hepatitis B Virus Infection in a Kidney Transplant Recipient

Figure 2

(a) Acute thrombotic occlusion of capillary loops, with segmental endocapillary hypercellularity due to inflammation, with endothelial cell swelling, and with fragmented red blood cells. (b) Mild increase in mesangial cells and moderate expansion of the mesangial matrix. Occasional inflammatory cells in capillary loops. (c) Segmental endocapillary hypercellularity with endothelial cell swelling due to inflammatory cells. (d) Positive staining for immunoglobulin G in the matrix and along glomerular capillary walls. Staining for immunoglobulins A and M and C3 and C1q was also positive.

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