title: Gastric hyperplastic polyps coexisting with early gastric cancers, adenoma and neuroendocrine cell hyperplasia.
abstract: Gastric hyperplastic polyps (GHP) constitute up to 93% of all benign epithelial polyps of the stomach. The average probability of malignant transformation in GHP is 0.6-22% in large series. The aim of the study was to present the coexistence of GHP with early gastric cancer (EGC), gastric adenoma (GA), neuroendocrine cell hyperplasia (NH) and well-differentiated neuroendocrine tumour (NET G1). Three cases were studied to reveal clinical data and morphological changes and to assess the relationship between GHP and accompanying gastric neoplastic lesions.
authors.affiliation: Katarzyna Karpińska-Kaczmarczyk, Department of Pathomorphology, Pomeranian Medical University, Unii Lubelskiej 2, 71-242 Szczecin, Poland, e-mail: kkarp@pum.edu.pl.
authors.forename: K
authors.initials: K
authors.lastname: Karpińska-Kaczmarczyk
authors.forename: M
authors.initials: M
authors.lastname: Lewandowska
authors.forename: A
authors.initials: A
authors.lastname: Białek
authors.forename: M
authors.initials: M
authors.lastname: Ławniczak
authors.forename: E
authors.initials: E
authors.lastname: Urasińska
mesh_terms: D000236:Adenoma / Q000473:pathology*; D000368:Aged; D002471:Cell Transformation, Neoplastic / Q000473:pathology; D005260:Female; D006801:Humans; D006965:Hyperplasia / Q000473:pathology; D008297:Male; D008875:Middle Aged; D055099:Neuroendocrine Cells / Q000473:pathology*; D011127:Polyps / Q000473:pathology*; D011230:Precancerous Conditions / Q000473:pathology*; D013274:Stomach Neoplasms / Q000473:pathology*