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Evaluation of clinico-pathological features and Helicobacter pylori infection in gastric inflammatory fibroid polyps

Title
Evaluation of clinico-pathological features and Helicobacter pylori infection in gastric inflammatory fibroid polyps
Type
Article in International Scientific Journal
Year
2014
Authors
Albuquerque, A
(Author)
Other
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Rios, E
(Author)
Other
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Macedo G
(Author)
FMUP
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Journal
Title: Virchows ArchivImported from Authenticus Search for Journal Publications
Vol. 465
Pages: 643-647
ISSN: 0945-6317
Publisher: Springer Nature
Other information
Authenticus ID: P-00A-021
Abstract (EN): Inflammatory fibroid polyps are rare mesenchymal lesions. The frequency of Helicobacter pylori infection in the gastric mucosa overlying inflammatory fibroid polyps and its relation with the histologic features of the polyps are undetermined. The clinico-pathological features of inflammatory fibroid polyps, the frequency of Helicobacter pylori infection in the overlying gastric mucosa, and its putative impact on the phenotype of the polyps were evaluated. Gastric inflammatory fibroid polyps diagnosed in our Hospital from 1998 to 2012 were reviewed and the histological. The histological sections were stained with hematoxylin and eosin and modified Giemsa for the evaluation of Helicobacter pylori infection. Inconclusive cases were further analyzed by immunohistochemistry with anti-Helicobacter pylori antibody. Diagnosis was confirmed in 54 polyps, 85 % developed in females, mean age 63 +/- 11 years. Most polyps were sessile (74 %), with a mean size of 15 +/- 12 mm, 96 % were located in the antrum and 85 % were removed by snare polypectomy. Helicobacter pylori infection was identified in 48 % of the polyps. Most inflammatory fibroid polyps developed in the submucosa, and mucosal extension was observed in 96 % of the cases. Chronic gastritis was observed in all cases (63 % with activity, 31 % with intestinal metaplasia, and 61 % with foveolar hyperplasia). Erosion and ulceration of the overlying gastric mucosa was observed in 48 % and 11 % of the polyps, respectively. Onion skin features were present in 52 % of the polyps and were more frequently observed in cases without evidence of Helicobacter pylori infection. Background changes in gastric mucosa were not distinctive according to Helicobacter pylori infection. Chronic atrophic gastritis with intestinal metaplasia was associated with the presence of perivascular onion skin lesions. To our knowledge, this is the second largest series of gastric inflammatory fibroid polyps. Helicobacter pylori infection was identified in about half of the cases and was associated with a lower frequency of onion skin features in the polyps.
Language: English
Type (Professor's evaluation): Scientific
No. of pages: 5
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