Stomach cancer other imaging findings: Difference between revisions
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==Barium studies== | ==Barium studies== | ||
Barium studies can identify both malignant gastric ulcers and infiltrating lesions | * Barium studies can identify both malignant gastric ulcers and infiltrating lesions. | ||
* False-negative barium studies can occur in as many as 50 percent of cases.<ref name="pmid6383166">{{cite journal| author=Dooley CP, Larson AW, Stace NH, Renner IG, Valenzuela JE, Eliasoph J et al.| title=Double-contrast barium meal and upper gastrointestinal endoscopy. A comparative study. | journal=Ann Intern Med | year= 1984 | volume= 101 | issue= 4 | pages= 538-45 | pmid=6383166 | doi= | pmc= | url=https://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=6383166 }}</ref> | |||
* Early gastric cancer where the sensitivity of barium meals may be as low as 14%.<ref name="pmid2916797">{{cite journal| author=Longo WE, Zucker KA, Zdon MJ, Modlin IM| title=Detection of early gastric cancer in an aggressive endoscopy unit. | journal=Am Surg | year= 1989 | volume= 55 | issue= 2 | pages= 100-4 | pmid=2916797 | doi= | pmc= | url=https://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=2916797 }}</ref> | |||
* Early gastric cancer has three types(elevated, superficial, shallow): | |||
Early gastric cancer (elevated, superficial, shallow): | |||
*Type I: elevated lesion, protrudes >5 mm into lumen (polypoid) | *Type I: elevated lesion, protrudes >5 mm into lumen (polypoid) | ||
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*Type III: shallow, irregular ulcer crater with adjacent nodular mucosa and clubbing/fusion/amputation of radiation folds | *Type III: shallow, irregular ulcer crater with adjacent nodular mucosa and clubbing/fusion/amputation of radiation folds | ||
Advanced gastric cancer: | * Advanced gastric cancer:<ref>http://radiopaedia.org/articles/gastric-carcinoma</ref> | ||
*Polypoid cancer can be lobulated or fungating | *Polypoid cancer can be lobulated or fungating | ||
*Lesion on dependent or posterior wall; filling defect in barium pool | *Lesion on dependent or posterior wall; filling defect in barium pool | ||
*Lesion on nondependent or anterior wall; etched in white by a thin layer of barium trapped between edge of mass & adjacent mucosa | *Lesion on nondependent or anterior wall; etched in white by a thin layer of barium trapped between edge of mass & adjacent mucosa | ||
*Ulcerated carcinoma (penetrating cancer): 70% of all gastric cancers | *Ulcerated carcinoma (penetrating cancer): 70% of all gastric cancers | ||
[[File:Gastric-carcinoma.jpg|300px|center|thumb|Double contrast images from a barium meal study showing an advanced gastric malignancy involving the body of stomach, source: Case courtesy of Dr Ian Bickle, Radiopaedia.org, rID: 21214]] | [[File:Gastric-carcinoma.jpg|300px|center|thumb|Double contrast images from a barium meal study showing an advanced gastric malignancy involving the body of stomach, source: Case courtesy of Dr Ian Bickle, Radiopaedia.org, rID: 21214]] | ||
==References== | ==References== | ||
Revision as of 19:43, 16 November 2017
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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]Associate Editor(s)-in-Chief: Parminder Dhingra, M.D. [2]
Overview
Fluoroscopy may be diagnostic of stomach cancer.
Barium studies
- Barium studies can identify both malignant gastric ulcers and infiltrating lesions.
- False-negative barium studies can occur in as many as 50 percent of cases.[1]
- Early gastric cancer where the sensitivity of barium meals may be as low as 14%.[2]
- Early gastric cancer has three types(elevated, superficial, shallow):
- Type I: elevated lesion, protrudes >5 mm into lumen (polypoid)
- Type II: superficial lesion (plaque-like, mucosal nodularity, ulceration)
- Type III: shallow, irregular ulcer crater with adjacent nodular mucosa and clubbing/fusion/amputation of radiation folds
- Advanced gastric cancer:[3]
- Polypoid cancer can be lobulated or fungating
- Lesion on dependent or posterior wall; filling defect in barium pool
- Lesion on nondependent or anterior wall; etched in white by a thin layer of barium trapped between edge of mass & adjacent mucosa
- Ulcerated carcinoma (penetrating cancer): 70% of all gastric cancers
References
- ↑ Dooley CP, Larson AW, Stace NH, Renner IG, Valenzuela JE, Eliasoph J; et al. (1984). "Double-contrast barium meal and upper gastrointestinal endoscopy. A comparative study". Ann Intern Med. 101 (4): 538–45. PMID 6383166.
- ↑ Longo WE, Zucker KA, Zdon MJ, Modlin IM (1989). "Detection of early gastric cancer in an aggressive endoscopy unit". Am Surg. 55 (2): 100–4. PMID 2916797.
- ↑ http://radiopaedia.org/articles/gastric-carcinoma