Imaging diagnostic value of lateral lymph node metastasis in middle and low rectal cancer
10.3760/cma.j.cn113855-20211231-00768
- VernacularTitle:中低位直肠癌侧方淋巴结转移影像学的诊断价值
- Author:
Huayu LI
1
;
Jianqiang TANG
;
Junling ZHANG
;
Tao LIU
;
Shuai ZUO
;
Lie SUN
;
Yingchao WU
;
Yong JIANG
;
Guowei CHEN
;
Tao WU
;
Yuanlian WAN
;
Xin WANG
Author Information
1. 北京大学第一医院普通外科，北京 100034
- Keywords:
Rectal neoplasms;
Lymphatic metastasis;
Diagnosis
- From:
Chinese Journal of General Surgery
2022;37(4):250-254
- CountryChina
- Language:Chinese
-
Abstract:
Objective:To evaluate CT and or MRI imaging in the diagnosis of lateral lymph node metastasis in patients of middle and low rectal cancer.Methods:In this study, 112 lateral lymph nodes were harvested in 79 patients with middle and low rectal cancer. The relationship between the preoperative imaging features of the lateral lymph nodes and the postoperative pathology was evaluated.Result:Thirty-eight cases (48%) were pathologically confirmed to have lateral lymph node metastasis. The diameter of metastasis-positive lateral lymph nodes was significantly larger than that of metastasis-negative lateral lymph nodes ( P<0.01). Multivariate analysis of clinical features and imaging features found that, tumors poorly differentiated, mucinous adenocarcinoma, signet ring cell carcinoma ( P=0.006), and the largest short diameter of the lateral lymph node ≥7 mm ( P=0.024), uneven density or signal ( P=0.022) were independent risk factors for lateral lymph node metastasis. Conclusion:Poor tumor differentiation, lateral lymph node maximum short diameter ≥7 mm, density or signal unevenness are independent risk factors for lateral lymph node metastasis in middle and low rectal carcinoma.
