An around 20 years old woman was admitted to our hospital because of lower right abdominal pain and fever. She had occasionally suffered from lower right abdominal pain only. Abdominal tenderness was found in the lower right abdomen. Abdominal CT scan findings showed wall thickness of the ileum end. Colonoscopy findings showed a sore and small upheaval lesion of the mucous membrane at the same area. So we took the biopsy specimen from the lesion. The pathological finding of biopsy suspected MALT lymphoma. She hoped to receive the surgical ileocecal resection. After surgical operation, she recovered quickly without symptoms. We reported a case with primary MALT lymphoma of the small intestine.
