Osteoma Originating from Mastoid Cortex

Abstract

Mastoid osteomas are very rare and defined as benign masses growing gradually in size. Temporal bone computed tomography is the examination of choice for their diagnosis and differentiation. Surgical resection is used to treat mastoid osteomas causing cosmetic deformity. Prognosis is good in cosmetic and curative aspects, and recurrences are very rare. No case of malign transformation has been reported. In this study, an adult patient who was treated because of a mastoid osteoma is presented with review of the current literature.

Long-Term Surgical Results of Cortical Mastoid Bone Osteomas

“…Osteomas usually involve the craniofacial skeleton being the most frequent benign tumor of the skull and facial bones. Typically, they affect the frontal and ethmoid sinuses, and rarely the EAC, eustachian tube, petrous apex, glenoid fossa, styloid process, middle ear, and ossicular chain [ 1 , 7 , 8 , 9 ]. Mastoid osteomas represent 0.1% to 1% of all benign tumors of the cranial bone and the mastoid represents the most frequent localization within temporal bone [ 2 , 9 ].…”

A Case of Giant Osteoma Located across the Parietal and Temporal Bones

“…[2][3][4] Our literature review revealed that osteoma limited to the temporal bone is often surgically treated for esthetic reasons. 2,[10][11][12][13][14][15] The osteoma in the present case was large in size (a giant osteoma with maximum diameter exceeding 3 cm), 16,17) and was located across the superior temporal bone and inferior parietal bone. Due to its size and location, the osteoma invaded higher into the skull than an osteoma limited to the mastoid process.…”

“…Osteoma is often treated through surgical resection, and post-operative recurrence is very rare. 2,4,10,12,13,18,19) When osteoma is located on the temporal squama or mastoid process, a complete resection should be per-formed until normal mastoid air cells are exposed or the base of the osteoma should be removed until cortical bone without osteoma is confirmed. 10,12,13,15,20) In the present case, the exact location of the osteoma in the skull and the overall shape of the osteoma could be easily assessed on the 3D CT scan of the skull, and the 3D Temporal bone CT scan was used to assess the degree of invasion into the diploë of the skull, and the depth of skull resection was planned based on this assessment.…”

Is there any association between Nasal Polyposis and Osteoma? A retrospective analysis of incidence of Paranasal Sinus Osteoma among 600 patients treated for Nasal Polyposis

“…Osteomas are the most common fi bro-osseous lesions of the head and neck region, affecting mainly the mandible, and represent the most frequent benign tumour of the paranasal sinuses [1], with an incidence of 0.6 % [2]. Compact osteomas are the most diffused type of osteoma found in the skull, while osteoid osteomas are rarely found in the same district.…”