Light-Chain (AL) Amyloidosis as a Rare Cause of Upper Gastrointestinal Bleeding: A Case Report and Systematic Literature Review

Although being a rare cause of upper gastrointestinal bleeding, AL-amyloidosis should be considered in patients with endoscopic findings of systemic disease and a clinical condition of suspected or known B-cell dyscrasia. An early diagnosis is crucial for patients with AL-amyloidosis as the disease often shows a rapid progression and treatment with combined personalized-/chemotherapy is usually well tolerated and highly efficient.