A 62-yr-old man presented with a 5-yr history of intermittent abdominal 
distention and pain. These symptoms persisted for several months and subsided 
without treatment. A diagnosis of suspected small bowel lymphoma was made based 
on plain radiograph and computerized tomogram findings, and he was referred to 
our institution for further evaluation. Segmental resection of the small 
intestine was performed and the diagnosis of marginal zone B-cell lymphoma 
associated with amyloidosis was made. This is the first case of marginal zone 
B-cell lymphoma of mucosa-associated lymphoid tissue (MALT) in the small 
intestine associated with amyloidosis in Korea.