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 ?
Bone pate is collected in a basin during mastoidectomy from the healthy, disease-free mastoid cortex and is set aside.
Periosteum of size 10 mm X 20 mm was harvested from mastoid cortex below linea temporalis to tip of mastoid and kept dry.
7% cases showed subperiosteal abscess which were associated with erosion of the outer wall of mastoid cortex.
We describe the case of a 22-year-old woman who presented with a slowly growing osseous lesion of the mastoid cortex.
The abscess occurs over the mastoid cortex when the infectious process within the mastoid air cells extends into the subperiosteal space.
Axial (Image A and B) and Coronal (Image C) showed left middle ear cholesteatoma causing erosion of left sigmoid sinus plate (Arrow Image C), larger left mastoid abscess formation with irregular destruction of lateral bony mastoid cortex and overlying postauricular abscess.
On removal of the mastoid cortex, the extradural abscess drained spontaneously through a tegmen defect.
It was sessile, covered by a layer of periosteum, and firmly attached to the mastoid cortex.
Drilling was performed between the border of the mass and mastoid cortex to further delineate its boundaries.
Periosteum was harvested from the mastoid cortex and prepared to approximate 125% of the area of tympanic perforation.