Systemic amyloidosis and the gastrointestinal tract

Area of Science:

• Gastroenterology
• Internal Medicine
• Pathology

Background:

• Systemic amyloidosis frequently involves the gastrointestinal tract.
• Different types of amyloidosis exhibit distinct gastrointestinal manifestations.
• Gastrointestinal involvement significantly impacts patient prognosis and management.

Purpose of the Study:

• To review the pathogenesis, gastrointestinal disposition, diagnosis, and treatment of five major systemic amyloidoses.
• To highlight the unique gastrointestinal impact of each amyloidosis type.
• To discuss specific gastrointestinal diseases, such as inflammatory bowel disease and familial Mediterranean fever, as causes of systemic amyloidosis.

Main Methods:

• Literature review of systemic amyloidoses and their gastrointestinal manifestations.
• Analysis of pathogenesis and patterns of gastrointestinal deposition for each amyloid type.
• Synthesis of current diagnostic approaches and treatment strategies.

Main Results:

• Each of the five systemic amyloidoses (e.g., AL, AA, ATTR, AH, ALECT2) presents unique gastrointestinal symptoms and findings.
• Gastrointestinal amyloid deposition can lead to a wide spectrum of complications, including malabsorption, obstruction, and bleeding.
• Inflammatory bowel disease and familial Mediterranean fever are significant underlying causes of certain systemic amyloidoses.

Conclusions:

• Understanding the specific gastrointestinal involvement of each systemic amyloidosis is crucial for accurate diagnosis.
• Tailored diagnostic and therapeutic strategies are necessary for managing gastrointestinal complications.
• Early recognition of systemic amyloidosis in patients with inflammatory bowel disease or familial Mediterranean fever is essential.