A Rare Case Report of Primary Ileocecal Lymphoma

Primary gastrointestinal lymphoma accounts for approximately 4% of all gastrointestinal malignancies, and colon involvement is extremely rare.Although imaging features are relatively characteristic, differential diagnosis can sometimes be difficult.Differential diagnosis is extremely important since its prognosis and treatment options are quite different from adenocarcinoma.Our case was followed up with a previous malignant melanoma and was admitted to our clinic with intra-abdominal lymphadenopathy.The images showed wall thickening in the ileocecal region that did not cause obstruction in the lumen, and the histopathological diagnosis was compatible with diffuse large B-cell lymphoma.First of all, a chemotherapeutic treatment protocol was applied to the patient, and rituximab was added due to progression during follow-up.However, the patient died due to lung infection.In this article, we aim to emphasize that lymphomas should be kept in mind as an important differential diagnosis from metastasis to bowel wall thickening seen in known primary cancer patients.