Mastoid osteomas: report of two cases.
OBJECTIVE
To discuss the differential diagnosis of two cases with mastoid mass.


METHODS
Case report and review of the literature.


METHODS
The study was carried out in Gulhane Military Medical Academy, Haydarpasa Training Hospital, Istanbul, Turkey.


RESULTS
Both cases were 23-year-old males. They admitted to our clinic with masses behind their left ears that had been progressively enlarging for 5 years. In both cases, coronal and axial computerized tomography scans revealed a wide-based lesion involving temporal bone cortex. The cases were operated on for diagnosis and for correction of the cosmetic deformity. Histopathological examinations were consistent with mixed and spongiotic osteoma.


CONCLUSIONS
Mastoid osteoma is a rare, benign tumor of bone. It may cause cosmetic deformity such as external mass or an auricular protrusion. Other neoplasms of the mastoid region, such as osteosarcoma and osteoblastic metastasis, should be considered for the differential diagnosis.
Güngör
Atila
A
Gulhane Military Medical Academy, Haydarpasa Training Hospital, Department of ENT, Istanbul, Turkey. atilagungor@superonline.com
Cincik
Hakan
H
Poyrazoglu
Ethem
E
Saglam
Omer
O
Candan
Hasan
H
D000328:Adult; D003937:Diagnosis, Differential; D005500:Follow-Up Studies; D006801:Humans; D008297:Male; D008416:Mastoid / Q000601:surgery*; D010016:Osteoma / Q000175:diagnosis* / Q000601:surgery; D012888:Skull Neoplasms / Q000175:diagnosis* / Q000601:surgery; D014057:Tomography, X-Ray Computed