Case Reports in Gastrointestinal Medicine / 2013 / Article / Fig 2

Case Report

Symptomatic Primary (AL) Amyloidosis of the Stomach and Duodenum

Figure 2

Biopsies from the gastric corpus stained with Congo red, with extracellular deposits between the gastric glands (a) and apple-green birefringence seen under polarized light (b). Immunohistochemical examination of a bone marrow biopsy showed a normal density of immunoglobulin kappa ( ) chain (c) and an increased density of immunoglobulin lambda ( ) chain positive cells (d).
525439.fig.002a
(a)
525439.fig.002b
(b)
525439.fig.002c
(c)
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(d)