A 34-year-old male comes to the dentist because of a 1st year history of swelling in the right upper jaw. On intraoral examination a single diffuse 2×1.5 cm swelling is seen on the right side of anterior maxilla. A biopsy specimen of the lessons shows numerous thin walled sinusoids in the connective tissue.hemosiderin deposition, and numerous giant cells in a haenorrhagic background. Which of the following is the most likely diagnosis?