Figure 7

Kaplan–Meier survival curves for each grade of dysplasia after PDT treatment. Severe epithelial dysplasia patients were a significantly higher risk of developing new severe epithelial dysplasia and even carcinoma.

Kaplan–Meier survival curves for each grade of dysplasia after PDT treatment. Severe epithelial dysplasia patients were a significantly higher risk of developing new severe epithelial dysplasia and even carcinoma.