Necrotizing sialometaplasia

Necrotizing Sialometaplasia

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

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