Diaphragmatic Amyloidosis Causing Respiratory Failure: A Case Report and Review of Literature

Figure 3

Gastroesophageal junction amyloidosis. (A) Hematoxylin and eosin stain of gastroesophageal junction showing a thickened muscularis propria, 20x. (B) Congo red stain showing diffuse extracellular positive staining (red-orange) restricted to the muscularis propria, 20x.