Necrotizing sialometaplasia (NS) is a self-limited inflammatory disease mainly involving minor salivary glands.
摘要坏死性涎腺化生是一种具有自限性的发炎疾病，主要侵犯小唾腺。
英语百科
Necrotizing sialometaplasia
Necrotizing sialometaplasia (NS) is a benign, ulcerative lesion, usually located towards the back of the hard palate. It is thought to be caused by ischemic necrosis (death of tissue due to lack of blood supply) of minor salivary glands in response to trauma. Often painless, the condition is self-limiting and should heal in 6–10 weeks.