2.

肺切除后胸腔冲洗液细胞学检查阳性结果的相关因素

Factors associated with positive post-resectional PLC

Author, ref. number, year, type of study	Patient group and saline volume for washing	Factors associated with positive pre-resectional PLC (P value)
Shintani et al[8] (2008) Prospective study	Total number of patients: 1, 271 Patients with positive PLC after lung resection: 32 (2.5%) 500 mL physiologic saline solution	Pathologic T status (P=0.001, 6) Vascular invasion (P=0.046, 8)
Taniguchi et al[13] (2009) Prospective study	Total number of patients: 296 Patients with positive PLC before closure: 26 (8.8%) 2, 000 mL warm physiologic saline solution	N stage (P＜0.000, 1) P factor (P=0.002) Lymphatic invasion (P＜0.000, 1) Vascular invasion (P＜0.000, 1)
Nakao et al[12] (2015) Retrospective study	Total number of patients: 1, 135 Patients with positive PLC before closure: 3 (0.26%) 2, 000 mL-3, 000 mL warm physiologic saline solution	Excluded from subsequent analyses due to lack of data