Figure 1: Upper (1a) and lower (1b) gastrointestinal endoscopies showed diffuse congestion and thickening of the small and large intestine

Figure a-c: Biopsy of intestinal tissue. Figure 2a show significant stromal soft tissue deposits and submucosal deposits (hematoxilin and eosin staining). Figure 2b show gastrointestinal amyloid deposition findings by endoscopic biopsy; the muscularis mucosa is visualized on Congo red staining. Figure 2c show histopathological analysis presenting apple-green birefrin- gence consistent with amyloid deposits (Congo red staining)

Figure 3: Computed tomography (CT) scan of the chest shows nodular pulmonary amyloidosis and diffuse interstitial pulmonary amyloidosis