Case of the Week: Colonic Lymphoma (CT & PET)

In this radiology lecture, we discuss the imaging appearance of large bowel lymphoma.

Key points include:

Often isodense to skeletal muscle.
May have aneurysmal dilatation of involved bowel.
Less likely obstructive and longer segment involvement compared to colonic adenocarcinoma.
Located near ileocecal valve.
GI lymphoma: Most common in stomach, followed by small bowel (ileum, jejunum, duodenum), least common site colorectal.
Splenomegaly and severe lymphadenopathy favor lymphoma but may not be present.

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