PMC8052136_01
Colonoscopy showing rectum with proctitis, characterized by erythema and scattered superficial ulcerations.
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fig1
Colonoscopy showed distal proctitis with superficial ulcerations (Figure 1).
Rectal biopsy with Congo Red stain. Amyloid deposition is seen in the rectal mucosal vessel walls and lamina propria.
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fig2
Red staining of rectal biopsies was performed, which revealed amyloid deposition in the rectal mucosal vessel walls and lamina propria (Figure 2). Retrospective staining of the gallbladder vessels also demonstrated amyloid deposition (Figure 3).
Postoperative histology of gallbladder with Congo Red stain. Amyloid deposition is seen in the gallbladder vessel.
CRIGM2021-6663391.003.jpg
PMC8052136_01_CRIGM2021-6663391.003.jpg
fig3
Red staining of rectal biopsies was performed, which revealed amyloid deposition in the rectal mucosal vessel walls and lamina propria (Figure 2). Retrospective staining of the gallbladder vessels also demonstrated amyloid deposition (Figure 3).