Abstract
Objective To investigate the correlation of pathology factors and prognosis of gastrointestinal stroma tumors (GIST). Methods The expression of CD117, CD34, SMA, S-100 and Ki-67 in 91 GIST cases were studied by Envision method of immunohistocbemistory;Sequently, the relationship of the location, the size, the hemorrhage, cellular necrosis, stroma mucus, the mitosis, Ki-67 expression and the prognosis were analyzed by SPSS 12.0. Results The positive rate of CD117, CD34, SMA, S-100 were 80.21%, 73.63 %, 34.07 %, 7.69 % respectively. There had significant difference between the location, the mitosis, Ki-67 expression and the prognosis; but no significant difference between the location, the hemorrhage, cellular necrosis, stroma mucus, CD117 expression and the prognosis. Conclusion The tumor's size, mitosis, and Ki-67 expression are associated with prognosis; CD117 expression and prognosis. Even more, Ki-67 expression may be a more precise factor to judge the tumor's biological behaviour compared to the mitosis. As a wally classified method, the Flecther classification is worth to spread. Key words: Gastrointestinal stromal tumors; Pathology; CD117; Ki-67; Prognosis
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