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고의경,조규섭,이일우,전경명 대한이비인후과학회 2005 대한이비인후과학회지 두경부외과학 Vol.48 No.6
We report, with a review of literature, an unusual case of ossifying fibroma of temporal bone. A 34-year-old female with historyof left craniectomy for hemifacial spasm visited our department in 1998 because of an incidentally found temporal bone mass.Magnetic resonance imaging showed a well-circumscribed, lobulated 333 cm sized tumor mass which was localized in thetemporal bone but did not invade the middle and inner ear with high signal intensity at T2 weighted image. The patient did nothave the spasm until 2000, when she manifested intermittent right otalgia. A computed tomography scan showed the 333cm sized right temporal bone tumor with bony erosion including tegmen mastoid and partial bony destruction. After retroauricularincision, tumor and granulation tissue were removed through simple mastoidectomy. The permanent pathologic report confirmedthe diagnosis of ossifying fibroma. The patient returned in August of 2004 with recurrent right otalgia that had been therefor 3 months. A computed tomography scan showed lobulated, multiseptated, osteolytic, low density tumor which located in theupper portion of mastoid pyramidal base. She underwent a simple mastoidectomy with removal of the recurred ossifying fibromawith destruction in tegmen mastoid. Ossifying fibroma are rare lesions of the temporal bone. Because tumors progress and canbecome clinically massive, early complete resection is advised whenever feasible to prevent clinically evident recurrences andpotentially life-threatening complication.