Acute gastritis is a broad term that encompasses a myriad of causes of gastric mucosal inflammation.
Depends on the etiology (see below).
- epigastric pain/tenderness
- nausea and vomiting
- loss of appetite
- infection: H. pylori (most common)
- systemic illness: trauma and burns
- pharmacological/medication: NSAIDs
- caustic ingestion
- acid/alkali ingestion
- Candida albicans
- eosinophilic gastritis
CT findings can suggest gastritis and detect complications such as gastric perforation, however, often gastritis and tumors cannot be easily differentiated on CT. Moreover, causes of gastritis cannot be determined on CT. Both circumstances require clinical/lab correlation, probable endoscopy examination and tissue biopsy 1,2.
CT findings suggestive of gastritis include:
- gastric wall edema: measuring the HU may be useful to differentiate edema from low attenuation neoplastic lesion
- halo sign: mucosal enhancement surrounded by submucosal and gastric wall edema
- 1. Horton KM, Fishman EK. Current role of CT in imaging of the stomach. Radiographics. 23 (1): 75-87. Radiographics (citation) - Pubmed citation
- 2. Sohn J, Levine MS, Furth EE et-al. Helicobacter pylori gastritis: radiographic findings. Radiology. 1995;195 (3): 763-7. Radiology (citation) - Pubmed citation
- 3. Brant WE, Helms CA. Fundamentals of Diagnostic Radiology. Lippincott Williams & Wilkins. (2007) ISBN:0781761352. Read it at Google Books - Find it at Amazon