磁共振成像检查对直肠癌淋巴结转移的诊断价值

王炫钦　李国柱

[关键词] MRI检查;直肠癌;淋巴结转移;诊断;灵敏度;特异度

[中图分类号] R445.2          [文献标识码] B          [文章编号] 1673-9701（2021）22-0128-03

Diagnostic value of magnetic resonance imaging in lymph node metastasis of rectal cancer

WANG Xuanqin   LI Guozhu

Department of Radiology， Dingxi People's Hospital， Dingxi   743000， China

[Abstract] Objective To explore the sensitivity and specificity of magnetic resonance imaging （MRI） in diagnosing lymph node metastasis of rectal cancer. Methods A total of 100 patients with rectal cancer from December 2017 to December 2020 in the oncology department of our hospital were randomly selected as research cases. All the included patients were examined by MRI and CT， and the clinical pathological diagnosis results were used as the gold standard to analyze MRI. The diagnostic value of MRI for disease staging and the sensitivity and specificity of diagnosis of rectal cancer lymph node metastasis were analyzed. And the diagnosis rate of MRI and CT was compared. Results The clinical diagnosis results showed that among 100 patients， 30 were NO， 40 were N1， and 30 were N2. MRI showed that 29 were NO， 42 were N1， and 29 were N2. The diagnosis accuracy of disease staging was 98.00% （98/100）. It can be seen from the clinical diagnosis results that a total of 71 patients with lymph node metastasis were included in the 100 patients. The diameter of the lymph node was 4.34～15.75 mm， with an average of （9.37±2.19） mm. 66 cases were diagnosed by MRI， the sensitivity was 92.96% （66/71）， the specificity was 100.00% （29/29）， the Kappa value was 0.72， and the consistency was good. Compared with CT examination， the diagnosis rate of MRI examination was higher （P<0.05）. Conclusion The application of MRI in the diagnosis of rectal cancer lymph node metastasis has a high diagnosis rate， sensitivity， and specificity， which can effectively reflect the severity of the patient's condition， provide a scientific basis for clinical diagnosis and treatment， and is worthy of promotion.

[Key words] MRI; Rectal cancer; Lymph node metastasis; Diagnosis; Sensitivity; Specificity

直腸癌是人体消化系统常见病，指发生于人体齿状线至直肠乙状结肠交界处之间的恶性肿瘤，多见于中老年人群，且男性发生率更高[1]。研究提示，淋巴结转移是直肠癌患者肿瘤进展常见途径，可影响患者肝脏、肺部、骨等组织，提高治疗难度，降低了治疗后生存率[2]。因此，诊断直肠癌患者淋巴结转移意义重大，以此制定针对性的手术方案，联合预后评估，可有效提高治疗效果。磁共振成像（magnetic resonance imaging，MRI）是临床常见影像学检查技术之一，具有分辨率高、可多方位成像等优点，诸多研究认可其对直肠癌淋巴结转移诊断具有极高的应用价值，利于直肠癌患者诊治工作[3-4]。本文选取2017年12月至2020年12月本院肿瘤科接收直肠癌患者100例作为研究病例，探究MRI检查诊断直肠癌淋巴结转移的灵敏度、特异度，现报道如下。