title: Temporal Bone Localized Chondroblastoma.
abstract: Chondroblastoma is a highly destructive tumor originating from immature cartilage cells. Although chondroblastoma is defined as a benign tumor, it may exhibit malign tumor behaviors such as invasion or metastasis on neighboring structures. Magnetic resonance (MR) image is a solid mass lesion, which included heterogeneous hypointense in T2A and heterogeneous minimal hyperintense in T1A with destructive expansile characteristics and millimetric calcifications. Temporal bone chondroblastomas may complicate the diagnosis because of their different histologic characteristics. Microscopically, chondroblastic cell nests and calcification of locally "chicken wire" type around the cells are observed. These tumors secrete s-100 and vimentin and are used for differential diagnosis. In this study, a temporal bone localized chondroblastoma case is presented.
authors.affiliation: *Ear Nose and Throat Clinic †Pathology Clinic ‡Department of Otorhinolaryngology, Radiology Clinic, Istanbul Training and Research Hospital, Istanbul, Turkey.
authors.forename: Hasan
authors.initials: H
authors.lastname: Demirhan
authors.forename: Engin
authors.initials: E
authors.lastname: Acioğlu
authors.forename: Yusuf Muhammed
authors.initials: YM
authors.lastname: Durna
authors.forename: Özgür
authors.initials: Ö
authors.lastname: Yiğit
authors.forename: Erol Rüştü
authors.initials: ER
authors.lastname: Bozkurt
authors.forename: Yeşim
authors.initials: Y
authors.lastname: Karagöz
mesh_terms: D000293:Adolescent; D001707:Biopsy, Needle / Q000379:methods; D002804:Chondroblastoma / Q000175:diagnosis* / Q000473:pathology; D003937:Diagnosis, Differential; D004424:Ear Canal / Q000473:pathology; D005500:Follow-Up Studies; D006801:Humans; D008279:Magnetic Resonance Imaging / Q000379:methods; D008297:Male; D012888:Skull Neoplasms / Q000175:diagnosis* / Q000473:pathology; D013701:Temporal Bone / Q000473:pathology*; D014054:Tomography / Q000379:methods