Analysis of influencing factors of lymph node metastasis in patients with central and peripheral types of squamous cell lung cancer / 天津医药

ABSTRACT

Objective To analyze the factors related to the metastasis of lung squamous cell carcinoma in patients with central and peripheral types of lung squamous carcinoma, and provide evidence-based basis for preoperative preparation, intraoperative lymph node treatment choice and postoperative treatment. Methods Clinical data of 142 patients with lung squamous carcinoma who performed operation in Tianjin Medical University Cancer Institute and Hospital from January 2014 to December 2015 were retrospectively analyzed. There were 83 cases of central lung squamous cell carcinoma and 59 cases of peripheral lung squamous carcinoma in these 142 patients. Single factor and multiple factor Logistic regression analysis were used to analyze the clinical data in patients with different type groups, including gender, age, smoking history and smoking index, preoperative CYFRA21-1 level, preoperative predictive lymph nodes metastasis, tumor diameter, tumor type (keratotic and non-keratotic), pleura invasion, tumor embolism and postoperative lymph node metastasis. Results There were 47 cases with lymph node metastasis in 147 patients, including 31 cases of central type metastasis, and 16 cases of peripheral type metastasis. Single factor analysis showed that gender, smoking history, smoking index, preoperative lymph node metastasis assessment, tumor diameter, and non-keratotic type were related to the metastasis of central type of lung squamous cell carcinoma. Pleural invasion and non-keratotic type were associated with peripheral type of pulmonary squamous cell carcinoma. Multivariate Logistic regression analysis showed that more smoking, large tumor diameter and non-keratotic type were independent risk factors for lymph node metastasis of central type of lung squamous cell carcinoma. The non-keratotic type was an independent risk factor for lymph node metastasis of peripheral pulmonary squamous carcinoma. Conclusion Non-keratotic type of squamous cell carcinoma is related to lymph node metastasis especially N1 lymph node metastasis. It is suggested that such patients should be actively treated and colsely followed up after the operation. Patients with more smoking may be more likely to have N2 lymph node metastasis.