Duodenal lymphoma

                Mucosa-associated lymphoid tissue (MALT) lymphoma rarely affects the duodenum. At times multiple small erosions are detected. One MALT low-grade B-cell lymphoma in the duodenal bulb was detected by a barium study and endoscopy as multiple elevated, irregularly contoured nodules .Adult T-cell leukemia led to varioliform polypoid infiltration in the duodenum. Sufficient involvement of adjacent lymph nodes will result in duodenal obstruction.
this is radiology images of Lymphoma obstructing duodenum. Duodenal invasion by an adjacent pancreatic carcinoma or a metastasis to paraaortic nodes has a similar appearance.
                 Mesenchymal Tumors, Some duodenal stromal tumors are sufficiently undifferentiated to be difficult to characterize. times even mitotic activity does not distinguish between benign and malignant tumors. Similar to other mesenchymal tumors, a duodenal leiomyoma may bleed or, if large enough, result in obstruction. Presumably some benign tumors eventually undergo sarcomatous degeneration. A thallium-201 single photon emission computed tomography (SPECT) myocardial perfusion study revealed prominent uptake in a duodenal leiomyosarcoma.
                The occasional duodenal lipoma is often an incidental finding. Some are huge. Some become pedunculated and even act as a lead point for an intussusception. A rare one erodes and bleeds. A barium study reveals a lipoma either as an intramural or intraluminal polyp.The primarily fat composition of a lipoma is identified by CT (assuming that the tumor is detected by CT)
this is radiology images of Duodenal lipoma (arrow).
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