中山大学附属第一医院放射科,广东 广州 510080
李璐杰,博士生,研究方向:放射诊断学,E-mail: lilj8@mail2.sysu.edu.cn
收稿:2021-06-18,
纸质出版:2021-11-20
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李璐杰,宋晨宇,周小琦等.胰腺神经内分泌肿瘤CT征象与SSTR2、VEGFR2及MGMT表达的关系[J].中山大学学报(医学科学版),2021,42(06):892-899.
LI Lu-jie,SONG Chen-yu,ZHOU Xiao-qi,et al.Relationship of CT signs and Expression of SSTR2, VEGFR2 and MGMT in Pancreatic Neuroendocrine Neoplasms[J].Journal of Sun Yat-sen University(Medical Sciences),2021,42(06):892-899.
李璐杰,宋晨宇,周小琦等.胰腺神经内分泌肿瘤CT征象与SSTR2、VEGFR2及MGMT表达的关系[J].中山大学学报(医学科学版),2021,42(06):892-899. DOI: 10.13471/j.cnki.j.sun.yat-sen.univ(med.sci).2021.0610.
LI Lu-jie,SONG Chen-yu,ZHOU Xiao-qi,et al.Relationship of CT signs and Expression of SSTR2, VEGFR2 and MGMT in Pancreatic Neuroendocrine Neoplasms[J].Journal of Sun Yat-sen University(Medical Sciences),2021,42(06):892-899. DOI: 10.13471/j.cnki.j.sun.yat-sen.univ(med.sci).2021.0610.
目的
2
探讨胰腺神经内分泌肿瘤(pNENs)的CT征象与生长抑素2型受体(SSTR2)、血管内皮生长因子2型受体(VEGFR2)及O
6
-甲基鸟嘌呤-DNA甲基转移酶(O
6
-methylguanine-DNA-methyltransferse,MGMT)表达的关系。
方法
2
收集2010年1月至2020年11月本机构经术后病理证实为pNENs 86例,所有患者术前均行增强CT检查,术后行SSTR2、VEGFR2、MGMT免疫组化检查。回顾性分析pNENs的CT特征与SSTR2、VEGFR2及MGMT表达情况的相关性,采用独立样本
t
检验或非参数检验及ROC曲线进行分析。
结果
2
SSTR2(+)组及SSTR2(-)组在性别、边界的差异有统计学意义(
P
<
0.05),VEGFR2(+)组及VEGFR2(-)组在性别、最大径线≥20 cm、边界、强化率(动脉期、静脉期)及CT值比率(静脉期)的差异有统计学意义(
P
<
0.05),MGMT(+)组及MGMT(-)组在最大径线≥20 cm、最大径、边界、强化率(动脉期)及CT值比率(平扫、动脉期、静脉期)的差异有统计学意义(
P
<
0.05)。CT征象评估SSTR2、VEGFR2及MGMT阳性表达的AUC分别为0.847、0.761和0.749,灵敏度分别为87.18%,76.67%和90.48%,特异度分别为87.50%,73.91%和57.14%。
结论
2
CT征象联合临床特征可以反映pNENs中SSTR2、VEGFR2及MGMT的表达。
Objective
2
To investigate the relationship between CT signs and expression of somatostatin receptor type 2 (SSTR2), vascular endothelial growth factor receptor type 2 (VEGFR2) and O
6
-methylguanine-DNA-methyltransferse (MGMT) in pancreatic neuroendocrine neoplasms (pNENs).
Methods
2
The data of 86 pNENs patients confirmed by histopathology were retrospectively analyzed, including CT imaging and expression of SSTR2, VEGFR2 and MGMT. Their correlations were identified by independent-samples t test, non-parametric test and receiver operating characteristic (ROC) curves.
Results
2
Gender and tumor boundary were significantly different between SSTR2-positive and SSTR2-negative pNENs patients (
P
<
0.05). Gender, maximum diameter ≥ 20 cm, boundary, enhancement ratio (arterial and venous phase) and CT value ratio (venous phase) were significantly different between VEGFR2-positive and VEGFR2-negative pNENs patients (
P
<
0.05). Maximum diameter, maximum diameter ≥ 20 cm, enhancement ratio (arterial phase) and CT value ratio (plain, arterial and venous phase) were significantly different between MGMT-positive and MGMT-negative pNENs patients (
P
<
0.05). The AUCs of CT signs assessing positive expression of SSTR2, VEGFR2 and MGMT were 0.847, 0.761 and 0.749 respectively, with sensitivity of 87.18%, 76.67% and 90.48% respectively, specificity of 87.50%, 73.91% and 57.14% respectively.
Conclusions
2
CT features combined with clinical manifestations can reflect expression of SSTR2, VEGFR2 and MGMT in pNENs.
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