gastric neuroendocrine tumor, well differentiated, low or intermediate grade familial gastric type 1 neuroendocrine tumor https://www.malacards.org/card/familial_gastric_type_1_neuroendocrine_tumor MONDO:0018742 familial type 1 gNET Orphanet:464756 Editor note: align gNET typology. See PMID:9041691 https://jamanetwork.com/journals/jamasurgery/fullarticle/390859 GARD:0021932 hereditary type 1 gNET UMLS:C5681095 MEDGEN:1826112