A rare condition in which there is ulceration usually in a smoker in the palate,which heals spontaneously over several weeks.Association with salivary gland infractions.histology can be confusing,since it has been appearance resembling neoplasia(Pseudo epitheliomatous hyperplasia)
· Affects mainly minor glands of the palate
· Painless,ulcerated swelling,the margins are irregular and heaped up or everted.
· Chronic inflammation in the minor salivary glands and necrosis of acini
· Duct tissues undergoes squamous metaplasia and proliferates to produce a pseudomembranous appearance