<unk>  <unk>  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. Although entirely benign and requiring no treatment, due to its similar appearance to oral cancer, it is sometimes misdiagnosed as malignant. Therefore, it is considered an important condition, despite its rarity.
Necrotizing sialometaplasia
Ectopic salivary gland tissue
Tuberculous gumma
Proliferating epidermoid cyst
Ceruminous adenoma
Perforating granuloma annulare
Benign lymphoepithelial lesion
Proliferating trichilemmal cyst