术前CA19-9联合血小板和淋巴细胞比值预测胰腺导管内乳头状黏液性肿瘤癌变风险的价值分析

The value of preoperative CA19-9 combined with platelet-to-lymphocyte ratio in predicting invasive malignancy in intraductal papillary mucinous neoplasms

目的探讨术前预测胰腺导管内乳头状黏液性肿瘤(IPMN)癌变的相关因素。方法采用回顾性病例队列研究。选择2005年1月至2014年12月于复旦大学附属中山医院胰腺外科进行手术治疗,并经术后病理学检查证实为胰腺IPMN的79例患者资料。男性46例,女性33例;年龄为(62.9±8.9)岁(范围:37~82岁)。肿瘤部位:胰头部56例,胰体尾部22例,全胰1例。手术方式:胰十二指肠切除术51例,胰体尾切除术22例,节段胰腺切除术4例,全胰腺切除术2例。根据肿瘤的组织病理学特征,将IPMN分为非浸润性病变和浸润癌,其中浸润癌32例,非浸润性病变47例。分别采用t检验和χ^2检验对非浸润性IPMN和浸润癌IPMN的各项术前指标进行单因素分析,并对单因素分析结果中有统计学意义的指标进行多因素分析。结果单因素分析结果显示,肿瘤大小(P=0.022)、癌胚抗原(P=0.012)、CA19-9(P=0.011)、淋巴细胞数目(P=0.034)、中性粒细胞与淋巴细胞比值(P=0.010)和血小板与淋巴细胞比值(PLR)(P=0.004)是具有统计学意义的预测因素。多因素分析结果显示,CA19-9(P=0.012)和PLR(P=0.025)是预测IPMN发生癌变的独立因素。CA19-9和PLR的联合预测因素的曲线下面积(0.864)大于CA19-9(0.806)和PLR(0.685),同时联合预测因素的各真实性评价指标均优于两者单独应用。结论CA19-9和PLR是能够预测IPMN癌变风险的独立因素,而CA19-9和PLR联合应用较两者单独应用效能好。

Objective To explore preoperative predictive markers for invasive malignancy in intraductal papillary mucinous neoplasm(IPMN). Methods The retrospective case-controlled study was adopted.Seventy-nine patients who underwent surgery and with pathologically confirmed IPMN from January 2005 to December 2014 at Department of Pancreatic Surgery, Zhongshan Hospital Fudan University were enrolled.Forty-six patients were male and 33 were female,with an average age of (62.9±8.9)years (range:37-82 years).Tumor sites:56 tumors were located at the head of the pancreas,22 were located at the body and tail of the pancreas,and 1 was located across the whole pancreas.Surgical procedures: 51 patients underwent pancreaticoduodenectomy, 22 patients underwent distal pancreatectomy, 4 patients underwent segmental pancreatectomy and 2 patients underwent total pancreatectomy.IPMNs were classified into non-invasive lesions and invasive carcinomas according to the histopathological findings of the tumor.Thirty-two tumors were non-invasive lesions and 47 were invasive carcinomas.The preoperative findings were compared between patients with non-invasive IPMN and patients with invasive carcinoma by univariate analysis using t test and χ^2 test accordingly,and factors with statistically significance were subsequently submitted to multivariate analysis. Results Univariate analysis showed that tumor size(P=0.022), carcinoembryonic antigen(P=0.012), CA19-9(P=0.011), lymphocytes(P=0.034), neutrophil-to-lymphocyte ratio(P=0.010)and platelet-to-lymphocyte ratio(PLR)(P=0.004)were predictive markers with statistical significance.Multivariate analysis showed that CA19-9(P=0.012)and PLR(P=0.025) were independent predictive markers for invasive malignancy in IPMN.The area under curve of the combination factor of CA19-9 and PLR(0.864) was larger than that of CA19-9(0.806) or PLR(0.685) alone, and all the authentic indicators of the combination factor were better than those of each alone. Conclusions CA19-9 and PLR are independent predictive markers for invasive malignancy in IPMN.The combination of CA19-9 and PLR has improved efficacy than each alone.