Thank you for all the replies. I realise it's unreasonable to ask people on a forum to diagnose me based on this. I will go and get a second opinion. It's just that the past few months have been absolute hell. I have an extremely high pressure job and the emotional strain I've been under has been immense. I thought the oral lichen planus diagnosis was definitive but now it appears not. I was just wondering if anyone could shed light on those details in the biopsy report. Doctor said no malignancy, no dysplasia, no cancer.

Presumably oral lichen planus has a pretty definitive appearance, histologically speaking. Is that not the case?