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Radiology
Stomach and Duodenum
Built from Fundamentals of Diagnostic Radiology
What’s inside
6 sections · 109 slides
Overview
- Stomach and duodenum overview
Imaging Methods
How the upper GI tract is examined with barium, CT, MR, and US
- Endoscopy and fluoroscopy roles
- UGI techniques
- CT of the stomach and duodenum
Anatomy
Layers of the gut wall and the divisions of the stomach and duodenum
- The gut wall has four concentric layers
- Gut wall layers in cross section
- Stomach divisions
- Duodenum: pylorus and bulb
- Duodenum: second to fourth portions
- Normal stomach and duodenum anatomy on a UGI series
- Areae gastricae and rugae
- Normal areae gastricae on double-contrast imaging
- Peritoneal attachments
- Normal wall thickness on CT
Stomach
H. pylori, mass lesions, thickened folds, and ulcers
- Helicobacter pylori: the organism
- How H. pylori survives stomach acid
- 70%
- H. pylori epidemiology and diagnosis
- Gastric carcinoma overview
- Gastric carcinoma growth patterns
- Polypoid gastric carcinoma on a single-contrast UGI series
- Scirrhous carcinoma of the stomach
- Scirrhous carcinoma on single-contrast UGI
- Scirrhous carcinoma on double-contrast UGI
- Additional causes of a narrowed stomach
- Gastric carcinoma spread
- Early gastric cancer on barium
- Gastric cancer on CT and MR
- Scirrhous carcinoma on CT
- Gastric carcinoma on MR
- Gastric lymphoma overview
- Gastric lymphoma patterns and UGI findings
- Gastric lymphoma, multinodular form
- Gastric lymphoma, infiltrating form
- Differentiating gastric malignancies
- Lymphoma versus carcinoma on CT
- Gastric lymphoma with marked wall thickening on CT
- GIST overview
- GIST imaging features
- Benign GI stromal tumor on a UGI series
- Malignant GI stromal tumor on UGI and CT
- Metastases to the stomach
- Metastases to the stomach
- Kaposi sarcoma of the stomach
- Villous tumors of the stomach
- Gastric polyps: appearances
- Gastric polyp types
- Causes of multiple gastric filling defects
- Lipoma and ectopic pancreas
- Bezoars and foreign bodies
- Trichobezoar casting the stomach and duodenum
- Reading a thickened gastric wall
- Gastritis overview
- Aphthous ulcers of erosive gastritis
- Gastritis on CT
- H. pylori gastritis
- Erosive gastritis
- Crohn gastritis and atrophic gastritis
- Phlegmonous and emphysematous gastritis
- Emphysematous gastritis on CT
- Eosinophilic gastroenteritis and Ménétrier disease
- Ménétrier disease on CT
- Gastric varices
- Gastric varices on CT
- Neoplastic fold thickening
- Gastric ulcer definition
- Ulcer signs on double-contrast UGI
- Peptic ulcer disease
- Benign ulcer signs
- Benign gastric ulcer on a UGI spot film
- Benign ulcer on CT
- Erosive gastroduodenitis on CT
- Malignant ulcer signs
- Malignant gastric ulcer: Carmen meniscus sign
- Benign versus malignant gastric ulcer
- Equivocal ulcers
Duodenum
Mass lesions, thickened folds, ulcers and diverticula, and narrowing
- Duodenal tumors: benign versus malignant
- Duodenal adenocarcinoma
- Duodenal adenocarcinoma on CT
- Duodenal metastases and lymphoma
- Metastasis to the duodenum on CT
- Duodenal adenoma and GIST
- Duodenal GI stromal tumor on MR
- Duodenal lipoma and lymphoid hyperplasia
- Gastric mucosal prolapse and Brunner glands
- Ectopic pancreas and extrinsic impressions
- Valvulae conniventes
- Duodenitis
- Erosive duodenitis on CT
- Other causes of thickened duodenal folds
- Intramural duodenal hemorrhage
- Duodenal hematoma on CT
- Duodenal ulcers
- Duodenal peptic ulcer on an upper GI series
- Postbulbar ulcers and complications
- Zollinger–Ellison syndrome
- Duodenal diverticula
- Duodenal diverticulum on CT
- Intraluminal duodenal diverticulum
- Intraluminal duodenal diverticulum on a UGI series
- Annular pancreas
- Annular pancreas on UGI and CT
- Other causes of duodenal narrowing
Upper Gastrointestinal Hemorrhage
Causes and imaging strategy for bleeding above the ligament of Treitz
- Upper GI hemorrhage: definition and causes
- Imaging strategy in upper GI hemorrhage
- Key takeaways
- References
- References
- Brant and Helms' Fundamentals of Diagnostic Radiology