Main J H, Birt B D, From L
Faculty of Medicine, University of Toronto.
J Dent Assoc S Afr. 1992 May;47(5):216-8.
Hypertrophic lichen planus is a variant of the condition not previously recognised as occurring in the mouth. Four cases are described that have been followed clinically for 18, 9, 6 and 3 years. The histopathology is described.