A 35-year-old woman complains of toothache and thickened body of the mandible. Objectively: the lower left jaw is thickened, Dupuytren’s symptom is observed on the vestibular surface of the mucogingival fold in the area of the 36 and 37 teeth. X-ray of the lower left jaw demonstrates the rounded focus of bone tissue destruction with clear margins. The roots of the 36 and 37 teeth are resorbed. Puncture yielded brown liquid. What is the most likely diagnosis?