Fig. 4

High vessel count is associated with an increased recurrence rate in early stage LSCC. Chi-square-Test was applied to comparerelapse rates and vessel count in patients with (a) low T-stage or (b) negative N-stage. Patients with a high number of CD31-positive vessels early stage LSCC had a significantly higher relapse rate compared to patients with early LSCC and low number of CD 31-positive vessels. a Patients were grouped according to T-stage and vessel count. Number of patients with relapse within 5 years is indicated. Chi-square test; p = 0.098. b Patients were grouped according to N-stage and vessel count. Number of patients with relapse within 5 years is indicated. Chi-square test; p = 0.004