Journal
JOURNAL OF CLINICAL PATHOLOGY
Volume 54, Issue 11, Pages 849-853Publisher
BMJ PUBLISHING GROUP
DOI: 10.1136/jcp.54.11.849
Keywords
gastric serrated neoplasia; gastric carcinoma; dysplasia; gastric adenoma
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Aim-Despite the fact that gastric carcinoma continues to be one of the most common cancers world wide, only dysplasia in flat mucosa and adenomas have been shown to evolve into invasive carcinoma. The aim of this paper is to report a novel histological phenotype of gastric adenoma with early invasive growth. Material and results-The patient presented with gastric complaints. A barium examination revealed an ulcerated tumour in the corpus, apparently infiltrating the gastric wall. The endoscopic examination showed a pediculated protruding tumour in the greater curvature. Punch biopsies were reported as invasive adenocarcinoma. Because of the poor condition of the patient, a partial gastrectomy was performed. The histological examination revealed elongated fronds with lateral crenated, saw tooth-like notches as a result of scalloped epithelial indentations. Areas with high grade dysplasia, with carcinoma in situ, and invasive carcinoma at the tip of the adenoma were demonstrated. The pedicle of the protruding neoplasia emerged from a non-protruding serrated adenoma. Conclusions-The protruding serrated neoplasia had apparently evolved from a non-protruding serrated gastric adenoma. This appears to be the first case of gastric serrated neoplasia in the literature.
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