نتایج جستجو برای: gastric neoplasms
تعداد نتایج: 581211 فیلتر نتایج به سال:
Abstract Introduction Gastric mesenchymal tumours are a rare group of neoplasms, which include gastrointestinal stromal (GISTs) and leiomyomas. To date, there is limited information on the tumour microenvironment (TME) in these despite TME widely known to influence hallmarks cancer. In this study we used single cell RNA sequencing (scRNAseq) profile individual cells GIST leiomyoma. Method The t...
Mutations in the chromatin remodeling gene ARID1A have recently been identified in the majority of ovarian clear cell carcinomas (OCCCs). To determine the prevalence of mutations in other tumor types, we evaluated 759 malignant neoplasms including those of the pancreas, breast, colon, stomach, lung, prostate, brain, and blood (leukemias). We identified truncating mutations in 6% of the neoplasm...
Background & Aims: Gastric diseases are common clinical conditions mostly diagnosed by endoscopy. Due to the high prevalence of stomach diseases in Iran and the world, this study was performed to evaluate the frequency of gastric diseases in Urmia Imam Khomeini Hospital. Materials & Methods: In this analytical-descriptive retrospective study all 2754 gastric pathology reports of endoscopy, der...
PURPOSE There is insufficient data about the role of eradication of H. pylori after endoscopic resection (ER) for gastric dysplasia. The aim was to investigate the benefit of H. pylori eradication after ER in patients with gastric dysplasia to prevent metachronous gastric neoplasms. MATERIALS AND METHODS We retrospectively reviewed 1872 patients who underwent ER of gastric dysplasia. We exclu...
Gastric Neuroendocrine Tumors (NETs), formerly known as Gastric Carcinoids (GCs), are neoplasms derived from enterochromaffin cells of the stomach. This heterogeneous group of tumors has been historically divided into three types, best distinguished by etiology. Type I gastric carcinoids, comprising 70-80% of gastric neuroendocrine tumors, are associated with autoimmune chronic atrophic gastrit...
Most gastric neuroendocrine tumours are well differentiated and considered as neuroendocrine neoplasms, whilst poorly differentiated lesions are considered as neuroendocrine carcinomas and account for only 6-16% of gastric neuroendocrine tumours. Gastric mixed adenoneuroendocrine carcinomas are rare malignancies usually composed of a neuroendocrine carcinoma and an adenocarcinoma with a variabl...
Malignant neoplasms (MNP) of the gastrointestinal tract in children are extremely rare and account for 1.2 % all MNP. According to world literature, incidence gastric cancer is no more than 0.05 cases MNP children. In national foreign only isolated stomach adolescents aged 10 18 years described. Clinical manifestations disease, as patients over age 18, non-specific – epigastric pain, loss appet...
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