The prognostic value of separate lymphatic invasion and vascular invasion in oesophageal squamous cell carcinoma: A meta-analysis and systematic review

Lymphovascular invasion (LVI) is a factor correlated with a poor prognosis in oesophageal squamous cell carcinoma (ESCC). Lymphatic invasion (LI) and vascular invasion (VI) should be reported separately because they may indicate a difference in prognosis.