肉瘤样病（sarcoidosis）是一慢性疾病，具有侵犯多器官的非干酪样肉芽肿的特点，病因不明，可能与对HLAⅡ型分子抗原的过度免疫反应有关，可侵犯体内任何器官，尤多见于肺、淋巴结、眼和皮肤。胃肠道受侵不常见，其中肝、胃是常受侵的器官。胰腺肉瘤样病罕见，在日本一组66356 Sarcoidosis is a chronic disease characterized by non-caseous granuloma that invades multiple organs. Its etiology is unknown. It may be related to excessive immune response to HLA class II molecular antigens. It can invade any organs in the body, especially in the lungs. , lymph nodes, eyes and skin. Invasion of the gastrointestinal tract is not common, and the liver and stomach are often invaded organs. Pancreatic sarcomatoid disease is rare in a group of 66356 in Japan