1. 1) Nagtegaal ID, Odze RD, Klimstra D, et al : Digestive System Tumours. WHO Classification of Tumours Editorial Board ed., WHO Classification of Tumours, 5th ed., IARC Press, Lyon, 2019
2. 2) Lloyd RV, Osamura RY, Klöppel G, et al : WHO Classification of Tumors of Endocrine Organs. WHO Classification of Tumors, 4th ed., IARC Press, Lyon, 2017
3. 3) Bosman FT, Carneiro F, Hruban RH, et al : WHO Classification of Tumors of the Digestive System. WHO Classification of Tumors, 4 th ed., IARC Press, Lyon 2010
4. 4) 日本胃癌学会/編:胃癌取扱い規約.第15版,金原出版,東京,2017,p35
5. 5) 日比知志,寺崎正起,岡本恭和他:二腺癌と共存した胃内分泌細胞癌の1例とわが国の報告71例の検討.癌の臨 2002;48:807-812