None of the patients had described ear trauma, previous ear surgery, or any disease related to the middle ear or mastoid bone
Mastoiditis, where an ear infection has spread to the mastoid bone
Positive margins on dura mater and the mastoid bone
required adjuvant radiotherapy.
She has webbed toes, uses a Bone Anchored Hearing Aid (BAHA), a new type of hearing aid that enters it's sound output into the cochlea by vibrating the mastoid bone
, and also has no tear ducts.
These are connected to a tiny electromagnetic vibrator which is positioned inside the mastoid bone
behind the ear and attaches to the hearing bones.
The device, Philips Sleepwave, is attached to the mastoid bone
behind the ear using a sensor cable and it works by sending electric pulses into the vestibular system.
Chronic ear infection may sometimes result from an infection of the mastoid bone
, which is located in the inner ear.
A literature search revealed two further examples of radiation-induced surface osteosarcoma: a parosteal osteosarcoma arising on the femur in a 16-year-old, 14 years after radiation treatment for an eosinophilic granuloma  and a further parosteal osteosarcoma of the mastoid bone
5 years after radiation therapy for a nasopharyngeal carcinoma .
A longitudinal fracture through the external auditory canal, middle ear and mastoid bone
Before antibiotics were developed, about 20 percent of ear infections resulted in serious complications such as mastoiditis, an infection of the mastoid bone
in the skull, and meningitis, an infection of the lining of the brain, Rosenfeld said.
Diament was of the view that pneumatization of the mastoid bone
is determined by hereditary factors.
This test uses a vibrator pressed against the patient's mastoid bone
for about 10 seconds.
One of the blows hit the mastoid bone
behind the right ear and that sent a shock wave through Mr Docherty's body, severing the vertebral artery.
This vibrates against the mastoid bone
, giving out a buzzing noise.
First, the scalp is cut open to expose a silver-dollar-sized portion of the mastoid bone
, located just behind the ear canal.