胃肠道间质瘤(gastrointestinal stromal tumor,GIST)是1998年以后识别并命名的新实体瘤。目前病理学家普遍接受GIST无绝对良性的观点,提倡分为恶性及恶性潜能未定肿瘤[1]。GIST引起患者死亡的主要原因是广泛侵犯临近器官和经血管转移至肺、肝或其他脏器。本例小肠恶性间质瘤的 Gastrointestinal stromal tumor (GIST) is a new solid tumor that has been identified and named after 1998. At present, pathologists generally accept the view that GIST has no absolute benignity and advocate the classification into malignant and malignant undetermined tumors [1]. The main cause of death from GIST is the widespread violation of adjacent organs and transvascular transfer to the lung, liver or other organs. This case of intestinal malignant stromal tumors