Colonoscopy Leading to the Diagnosis of AL Amyloidosis in the Gastrointestinal Tract Mimicking an Acute Ulcerative Colitis Flare.

The 2 most common types of amyloidosis are light chain (AL) and reactive (AA). AL is associated with plasma cell dyscrasias; reactive (AA) is associated with chronic inflammatory conditions. A few cases have described AL amyloidosis mimicking colitis.