Tooghalvtreds procent af patienterne i PDT + OM- gruppen viste normalt pladeepitel, mens 59% havde fravær af dysplasi sammenlignet med henholdsvis 7% og 14% i OM alene gruppen (p < 0, 0001).
Fifty-two percent of patients in the PDT + OM group showed normal squamous cell epithelium while 59% had absence of dysplasia compared to 7% and 14% in the OM alone group, respectively (p < 0.0001).