The predictive value of MSCT imaging features on the pathological risk of gastrointestinal stromal tumors / 中国辐射卫生

ABSTRACT

Objective To investigate the predictive value of MSCT imaging features on the pathological risk of gastrointestinal stromal tumors (GISTs). Methods The MSCT manifestations of 120 GISTs patients confirmed by operation, pathology and immunohistochemistry were analyzed retrospectively. The age of tumor onset, location, maximum diameter, morphology, growth pattern, cystic necrosis, calcification, peritumoralfat space, enhancement pattern, peritumoralor intratumoral vessels, peak period of enhancement, metastasis, and the relationship between Ki-67 proliferation index and pathological risk grade were also analyzed. Results Among 120 cases, there were 55 cases of extremely low and low risk, 28 cases of moderate risk, and 37 cases of high risk. There were significant differences in location, tumor diameter, morphology, growth pattern, cystic necrosis, peritumoral fat space, enhancement pattern, peritumoral or intratumoral vessels, peak period of enhancement, and Ki-67 proliferation index of GISTs (P < 0.05). There was no significant difference in calcification, CT plain scan, enhanced scan (3 phase), peak value and Ap、Vp、Dp of GISTs with different risk (P > 0.05). Conclusion There are differences in the performance of multi-layer spiral CT (MSCT) in GISTs with different risk levels. It is closely related to the classification of pathological risk. For the diagnosis of GISTs, clinical treatment plan formulation and prognosis, it has important reference value.