duodenal polyps

Sporadic duodenal polyps are uncommon, being found in up to 5% (0.3-4.6% of cases) of patients referred for upper gastrointestinal endoscopy. They are often discovered incidentally and the majority of patients are asymptomatic.

The most common lesions necessitating removal are duodenal adenomas which should be differentiated from other mucosal lesions such as ectopic gastric mucosa, and submucosal lesions such as carcinoids and gastrointestinal stromal tumours (GISTs).

Types

 duodenal hyperplastic polyp
 duodenal adenomas (duodenal intestinal-type adenomas)

• duodenal tubulous adenoma
• duodenal villous adenoma
• duodenal tubulovillous adenoma

 duodenal hamartomas
 duodenal gastric metaplasia
 duodenal inflammatory fibroid
 duodenal lipoma
 duodenal leiomyoma
 duodenal carcinoid tumor
 duodenal stromal tumor
 solitary duodenal Peutz-Jeghers polyp
 duodenal lymphoma

According to localization

 non-ampullary duodenal polyp
 ampullary duodenal polyp

See also

 digestive polyps
 duodenal tumors