A 30-year-old woman complains of a painless swelling in the area of her right lower jaw. The swelling appeared 6 months ago and is slowly increasing in size. Objectively, on the body of the lower jaw on the right in the area of teeth 45 and 46. there is a dense neoplasm 2.5x1.5 cm in size, painless to palpation. The skin and mucosa over the neoplasm are mobile and without discoloration. The oral cavity is sanated. The teeth on the lower jaw are intact. The sensitivity of the lower lip is unchanged. Regional lymph nodes are not palpable. X-ray detects a polycystic formation with clear boundaries in the area of the body of the mandible on the right. Make the provisional diagnosis.