“…PATIENTS AND METHODS: Fifty patients enrolled in the study underwent plane and three dimensional CT scan (PHILIPS-MX 8000). Ossicles changes, mastoid cavity, tympanic cavity, and presence of cholesteatoma were evaluated. …”
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“…CT scan revealed bony erosion and extensive soft tissue in the middle ear and mastoid. No ossicular chain destruction was found. …”
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“…We describe a rare case of spontaneous pneumocephalus arising from the mastoid cells with intraparenchymal location and present an extensive review of the existing literature. …”
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“…The intercochlear distance was significantly correlated with mastoid depth, midpoint of the pharyngeal opening distance, sella to nasion distance, and nasopharynx sagittal area and inversely with angle of the auditory tube. …”
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“…RESULTS: Many anatomical variants were observed regarding the pattern of mastoid pneumatization, position of middle cranial fossa dura, sigmoid sinus position jugular bulb position, and the size and position of the mastoid segment of facial nerve canal. …”
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“…Computed tomography (CT) scan revealed an aggressive mass involving the left preauricular region with temporal mastoid bone erosion. Magnetic resonance imaging (MRI) showed an extra-axial left temporal mastoid mass pushing the left temporal lobe superiorly. …”
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“…The auditory steady-state response (ASSR) has been traditionally recorded with few electrodes and is often measured as the voltage difference between mastoid and vertex electrodes (vertical montage). …”
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“…Slice A contained both the root of the zygoma and the inion simultaneously, and slice B displayed the mastoid emissary foramen. (3) Four points (α, β, γ, δ) were arranged on slices A and B, and point α was located at the inner surface of the skull, which represents the posterior part of the sulci of the sigmoid sinus. …”
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“…Although CI could be done with subtotal petrosectomy in single or staged surgery, this surgery needed additional surgical procedures to obliterate the mastoid cavity. This paper describes a new surgical technique for CI surgery in cholesteatoma without external auditory canal closure.…”
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“…CONCLUSIONS: There is no relationship between season and middle ear diseases between children and juveniles, but COM and mastoid problems are more common in summer among adults visiting this clinic. …”
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“…Dose–volume histogram parameters were generated for the Eustachian tube (ET), tympanic cavity (TC), mastoid air cells, vestibular apparatus, cochlea and internal auditory canal (IAC). …”
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“…For galvanic vestibular stimulation application, a positive electrode was applied to the right mastoid process, and a negative electrode was applied to the left mastoid process; simulation was applied for 10 minutes. …”
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“…Vascular variants, aberrant route of the facial nerve, an underdeveloped mastoid, aplasia of the semicircular canals, and stenotic round window may complicate cochlear implantation.…”
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“…Before positioning the electrode cable in the mastoid cavity, fixation of the cable is recommended.…”
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“…Skin incision starts in front of the ear curve going to 1 inch behind the mastoid line. Strong retraction with hooks keeps a clean space for the craniotomy. …”
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“…RESULTS: Of 166 patients, the mastoid emissary vein (MEV) was not identified in 37 (22.3%) patients. …”
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“…BACKGROUND AND OBJECTIVES: Pneumatization of air cells in the mastoid bone is decreased in chronic otitis media (COM). …”
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“…In addition to mechanical stimulation, the actuator emits sound into the mastoid cavity because of the motion of the diaphragm. …”
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“…For the 27 cases, the most common complaint was periauricular swelling (12/27, 44.4%), followed by otorrhea (9/27, 33.3%) and otalgia (5/27, 18.2%). The mastoid process was the most common involved subsite (31/38, 81.6%) among the 38 lesions. …”
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“…Intervention  Microsurgical resection via combined mastoid-middle fossa approach with great auricular nerve interpositional graft. …”
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