Gastric lymphoma

Epidemiology

• The stomach is the most common site for lymphoma in the gastrointestinal tract.

• More than 50% of affected patients have anemia.

• Peak incidence is in the sixth and seventh decades.

• The disease is more common in males.

Mucosa-associated lymphoid tissue (MALT)

• Gastric submucosa does not normally contain lymphoid tissue.

• H. pylori infection is believed to be a causal factor for MALT.

• Low-grade MALT resembles Peyer patches.