Crescent osteolytic defect

Crescent osteolytic defect: Keratoacanthoma is characterized by a crescent osteolytic defect under radiation. Keratoacanthoma (keratoacanthoma), also known as sebum molluscum or pseudocancerous molluscum, is a proliferative lesion of keratinized epithelium of the hair follicle. More common in men, middle-aged and elderly people.

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