胃肠道间质瘤预后因素的临床分析

目的探讨影响胃肠道间质瘤(GIST)的预后因素。方法回顾性分析2000-2003年间41例GIST患者的免疫组织化学表达情况及肿瘤的大小、生长部位、核分裂数及手术的切除程度与该病预后的关系。结果GIST患者的病理切片中CD117、CD34和波形蛋白(vimentin)的表达比较高,分别为92.7%、82.9%和78.0%。生长在小肠的GIST比生长在胃和结直肠者预后差(P<0.05);肿瘤直径大于5cm患者的预后较小于或等于5cm的差(3年生存率为54%比72%,P<0.05);核分裂大于5/50HPF者预后较小于或等于5/50HPF者差(P<0.05);行不完全性切除手术者比行完全性切除者预后差(P<0.05)。结论完全性手术切除肿瘤能明显提高GIST患者的预后。生长在小肠的肿瘤、肿瘤直径大于5cm和核分裂大于5/50HPF是影响肿瘤预后的因素。

Clinical analysis of prognostic factors for patients with gastrointestinal stromal tumors

OBJECTIVE: To investigate the prognostic factors for patients with gastrointestinal stromal tumors (GIST). METHODS: From 2000 to 2003, clinical data of 41 cases with GIST were reviewed retrospectively. The clinicopathologic diagnosis was determined by immunochemistry. The relationships of the prognosis with mitotic counts, tumor size and location,range of tumor resection were analyzed. RESULTS: The patients with GIST had pathological section of high expression in CD117, CD34 and vimentin (92.7%, 82.9%, 78%, respectively). Patients with tumor location in intestine, tumor size > 5 cm,mitotic counts > 5/50HPF, incompleted resection had poorer outcome, compared with those with tumor location in stomach and colon,tumor size < or = 5 cm,mitotic counts < or = 5/50HPF and complete resection (all P< 0.05). CONCLUSION: Complete gross resection can improve prognosis for patients with GIST. Tumors with mitotic counts > or = 5/50HPF, tumor size more than 5 cm and tumor location in intestine are poor prognostic factors.