胃淋巴瘤:起自胃黏膜固有层和黏膜下层的淋巴组织。绝大多数为非霍奇金淋巴瘤(non‐Hodgkin ’ s lymphoma,NHL),而霍奇金病(Hodgkin ’ s disease,HD)极为罕见。常见的亚型是结外黏膜相关性淋巴样组织型淋巴瘤(mucosa associated lymphoid tissue lymphoma,MALTL)和弥漫大B细胞性淋巴瘤(diffused large B cell lymphoma,DLBCL)。累及黏膜时,局部或弥漫性黏膜增粗、壁增厚,或局部单发、多发结节或 ......