mastoid cortex

mastoid cortex

the plate of bone on the lateral surface of the mastoid process of the temporal bone.

mas·toid cor·tex

(mas'toyd kōr'teks)
The plate of bone on the lateral surface of the mastoid process of the temporal bone.
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References in periodicals archive ?
Computed tomography (CT) scan of the temporal bone revealed soft tissue lesions with mastoid cortex erosion in both ears (Figure 1).
In case of cholesteatoma with eroded incus, we used a remodeling head of malleus (5/37) and mastoid cortex bone (8/37) for the collumela effect.
During the surgery, it was observed that the external auditory canal posterior wall was destructed because of cholesteatoma, and there was an auto mastoidectomy cavity just behind the mastoid cortex. It was detected that there was an approximately 1 x 1 cm bone defect in the posterior dural and an approximately 1.5 x 1 cm bone defect in the middle fossa dural plates.
Periosteum of size 10 mm X 20 mm was harvested from mastoid cortex below linea temporalis to tip of mastoid and kept dry.
Total 5.7% cases showed subperiosteal abscess which were associated with erosion of the outer wall of mastoid cortex. Total 8.6% cases had cerebral/cerebellar abscess out of which one had right temporal lobe abscess and two had left cerebellar abscess.
We describe the case of a 22-year-old woman who presented with a slowly growing osseous lesion of the mastoid cortex. On computed tomography, the lesion was found to involve the mastoid cortex, with which it demonstrated similar attenuation.
The abscess occurs over the mastoid cortex when the infectious process within the mastoid air cells extends into the subperiosteal space.
Bone pate is collected in a basin during mastoidectomy from the healthy, disease-free mastoid cortex and is set aside.
37 years female patient with chronic right ear discharge with post auricular swellings had cholesteatoma with erosion of lateral mastoid cortex and Tegmen tympani.
Osteoma growing from the mastoid cortex. Arch Otolaryngol 1938;28:27-8.
On removal of the mastoid cortex, the extradural abscess drained spontaneously through a tegmen defect.