Colonic Metastases and Lymphoma

 Intravenous contrast for CT or MR


image Double contrast barium enema





TOP DIFFERENTIAL DIAGNOSES




• Adenocarcinoma
image Short, focal, “apple core” lesion < 10 cm in length

image More likely to cause colonic obstruction than submucosal lymphoma or mets

• Colonic Kaposi sarcoma

• Ileocolic tuberculosis

• Gastrointestinal stromal tumor


PATHOLOGY




• Metastatic spread from melanoma or primary tumor of stomach, lung, or breast (rarely, other cancers)
image Gastric cancer may directly invade transverse colon along gastrocolic ligament

• Lymphoma may arise from and be limited to colon


CLINICAL ISSUES




• Most common signs/symptoms: Rectal bleeding, symptoms of obstruction, especially if intussusception is present

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Nov 16, 2016 | Posted by in GASTROINTESTINAL IMAGING | Comments Off on Colonic Metastases and Lymphoma

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