obsolete_Gastric Neuroendocrine Tumor G1 true gastric ECL cell NET G1 NCIT:C4635 gastric ECL cell NET gastric neuroendocrine tumor G1 http://purl.obolibrary.org/obo/MONDO_0006227 stomach neuroendocrine tumor, well differentiated, low grade gastric ECL-cell carcinoid tumor grade 1 neuroendocrine neoplasm of stomach gastric enterochromaffin-like cell carcinoid tumor EFO:1000275 gastric ECL cell, histamine-producing NET stomach neuroendocrine neoplasm G1 gastric carcinoid tumor A well differentiated, low grade neuroendocrine tumor (carcinoid tumor) that arises from the stomach. The vast majority of cases arise from the corpus-fundus region. The mitotic count is less than 2 per 10 HPF and/or the Ki67 index is equal to or less than 2 percent. It may be associated with autoimmune chronic atrophic gastritis, multiple endocrine neoplasia type 1, or it may be sporadic. Replaced by Mondo term MONDO_0006227, with which this term was previously merged. Use: http://purl.obolibrary.org/obo/MONDO_0006227 gastric enterochromaffin-like cell neuroendocrine tumor stomach NET G1 UMLS:C0349529 stomach carcinoid tumor 3.88.0 gastric NET G1