Case Report
Copyright ©The Author(s) 2015.
World J Gastrointest Endosc. Nov 25, 2015; 7(17): 1257-1261
Published online Nov 25, 2015. doi: 10.4253/wjge.v7.i17.1257
Table 2 Histological differential diagnosis of polyps in the duodenum
PrimaryEpithelial
Duodenal adenoma/adenocarcinoma
Ampullary adenoma/adenocarcinoma
Hyperplasia, heterotopias, ectopias, inflammatory
Brunners gland hyperplasia/hamartoma
Gastric/pancreatic hetertopia/ectopia
IBD associated inflammatory pseudopolyps
Inflammatory fibroid polyp
Peutz Jegher polyps
Juvenile polyps (JPS or PTEN associated)
Cronkhite-Canada syndrome polyps
Neuroendocrine/neural
Neuroendocrine tumors
Mixed adenocarcinoma neuroendocrine carcinoma
Gangliocytic paranglioma
Neurofibroma
Ganglioneuroma
Schwannoma
Perinerioma
Mesenchymal
Gastrointestinal stromal tumor
Leiomyoma
Lipoma
Hemangioma
Granular cell tumor
Kaposi sarcoma
Lymphoid
Lymphoid hyperplasia
B and T cell lymphomas
SecondaryMetastases
MiscellaneousMalakoplakia, mucosal prolapse related, lymphangiectasia, xanthoma