Paraduodenal Wall Cyst
Definition
- Postinflammatory cystic lesion periampullary region
Alternate/Historical Names
- Cystic dystrophy
- Groove pancreatitis
- Myoadenomatosis
- Pancreatic hamartoma of the duodenum
Diagnostic Criteria
- Mucosal thickening
- Trabeculation of duodenal muscularis
- Intramural cysts
- Lining may be pancreatic ductal epithelium or inflammation/granulation tissue
- Walls composed of inflamed fibrous tissue
- May have foreign body giant cell reaction
- Frequent calcification
- Located in or on duodenal wall
- May involve adjacent pancreas
- Typically in region of ampulla or accessory ducts
- Microcystic trabeculation of duodenal wall has been termed myoadenomyomatosis
Robert V Rouse MD
Department of Pathology
Stanford University School of Medicine
Stanford CA 94305-5342
Original posting : February 28, 2008
Update: April 25, 2009
