Small intestine cancer CT: Difference between revisions
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==CT Scan== | ==CT Scan== | ||
CT is the modality of choice for staging | *CT is the modality of choice for staging the disease by identifying primary tumor, assessing local, nodal and distant spread. | ||
*CT can help in differenting the small intestinal cancers. Different tumors have different appearance on CT:<ref name="BuckleyFishman1998">{{cite journal|last1=Buckley|first1=J A|last2=Fishman|first2=E K|title=CT evaluation of small bowel neoplasms: spectrum of disease.|journal=RadioGraphics|volume=18|issue=2|year=1998|pages=379–392|issn=0271-5333|doi=10.1148/radiographics.18.2.9536485}}</ref> | |||
*CT scamn can show intrinsic mass with a short segment of bowel wall thickening. | |||
*Invasion of retro peritoneal fat planes, pancreatic and biliary duct, vascular encasement, lymph nodal and distant metastases is common in later stages. | |||
*In [[Peutz-Jeghers Syndrome]], non-neoplastic lesions may resemble small intestinal neoplasm on CT. | |||
{| class="wikitable" | |||
|+ | |||
!Tumors | |||
!Findings on CT | |||
|- | |||
|'''Adenocarcinmoa''' | |||
|Ulcerative lesions, nodular lesions and annular lesions | |||
|- | |||
|'''Carcinoid tumors''' | |||
|Poorly defined homogenous mass displacing intestinal loops | |||
Calcification and desmoplastic reaction is a very specific finding of [[Carcinoid tumors]] on CT | |||
|- | |||
|'''Non-Hodgkin lymphoma ''' | |||
|Bulky mass on CT | |||
[[Lymphoma]] is associated with significant dilation of the lumen of intestine | |||
|- | |||
|'''Gastrointestinal stromal tumors(GISTs) ''' | |||
|Intraluminal, subserosal or submucosal homogeneous masses with sharply defined borders | |||
Calcifications | |||
|- | |||
|'''Lipoma ''' | |||
|Intraluminal homogeneous mass, well-circumscribed and with some fat attenuation | |||
|- | |||
|'''Malignant metastasized tumors ''' | |||
|Intraperitoneal seedings extending locally | |||
Metastasized tumors give appearance of multiple small nodular masses in intestinal serosa, mesentery and omentum. | |||
|} | |||
==References== | ==References== | ||
Revision as of 16:01, 2 January 2019
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Small intestine cancer Microchapters |
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Small intestine cancer CT On the Web |
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American Roentgen Ray Society Images of Small intestine cancer CT |
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Risk calculators and risk factors for Small intestine cancer CT |
Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]Associate Editor(s)-in-Chief: Parminder Dhingra, M.D. [2]
Overview
Abdominal CT scan may be diagnostic of small intestine cancer. Findings on CT scan suggestive of small intestine cancer is intrinsic mass with a short segment of bowel wall thickening.
CT Scan
- CT is the modality of choice for staging the disease by identifying primary tumor, assessing local, nodal and distant spread.
- CT can help in differenting the small intestinal cancers. Different tumors have different appearance on CT:[1]
- CT scamn can show intrinsic mass with a short segment of bowel wall thickening.
- Invasion of retro peritoneal fat planes, pancreatic and biliary duct, vascular encasement, lymph nodal and distant metastases is common in later stages.
- In Peutz-Jeghers Syndrome, non-neoplastic lesions may resemble small intestinal neoplasm on CT.
| Tumors | Findings on CT |
|---|---|
| Adenocarcinmoa | Ulcerative lesions, nodular lesions and annular lesions |
| Carcinoid tumors | Poorly defined homogenous mass displacing intestinal loops
Calcification and desmoplastic reaction is a very specific finding of Carcinoid tumors on CT |
| Non-Hodgkin lymphoma | Bulky mass on CT
Lymphoma is associated with significant dilation of the lumen of intestine |
| Gastrointestinal stromal tumors(GISTs) | Intraluminal, subserosal or submucosal homogeneous masses with sharply defined borders
Calcifications |
| Lipoma | Intraluminal homogeneous mass, well-circumscribed and with some fat attenuation |
| Malignant metastasized tumors | Intraperitoneal seedings extending locally
Metastasized tumors give appearance of multiple small nodular masses in intestinal serosa, mesentery and omentum. |
References
- ↑ Buckley, J A; Fishman, E K (1998). "CT evaluation of small bowel neoplasms: spectrum of disease". RadioGraphics. 18 (2): 379–392. doi:10.1148/radiographics.18.2.9536485. ISSN 0271-5333.