Primary Systemic Amyloidosis - an Unusual Cause of Diarrhea

摘要

The amyloidosis is a group of rare diseases caused by extracellular deposition of amyloid. It may affect multiple organs with protean manifestations, thus often causing delayed or incorrect diagnoses. We report a case of gastrointestinal involvement in primary systemic amyloidosis (PSA) in a patient complaining of diarrhea and weight loss. The diagnosis was confirmed by endoscopic biopsies of upper digestive tract and by multidisciplinary evaluation for systemic involvement.