GI Section 1: Luminal (Small Bowel Cancer) Flashcards
Most common CA in the proximal small bowel
give the usual location
AdenoCA (usually duodenum)
Small bowel AdenoCa has increased incidence with
Celiac and regional enteritis
AdenoCA of the small bowel
Focal circumferential bowel wall thickening
The duodenal web does NOT increase the risk.
Adenocarcinoma is more likely to obstruct relative to
Lymphoma
Small Bowel Lymphoma is usually what type?
NHL
Small bowl lymphoma has increased incidence in patients with?
Patients with celiac, Crohns, AIDS, and SLE are higher risk
do NOT obstruct, even with massive circumferential involvement
lymphoma
Small bowel lymphoma favors what?
Ileum
Small bowel lymphoma
circumferential involvement
Carcinoid
a mass + desmoplastic stranding
“Starburs” appearance of the mesenteric mass with calcifications
“Starburs” appearance of the mesenteric mass with calcifications (desmoplastic reaction)
Carcinoid
Carcinoid liver mets appearance
Hypervascular
The most common primary location of carcinoid
Distal ileum
What causes degradation of the heart valves in carcinoid?
Systemic serotonin causing tricuspid regurgitation
Small bowel metastatis is usually?
Melanoma
