mastoid process of petrous part of temporal bone

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mastoid process of petrous part of temporal bone

[TA]
the portion of the petrous part of the temporal bone bearing the mastoid process.
References in periodicals archive ?
Computed tomography showed extensive destruction of the tympanic and mastoid part of the temporal bone, as well as lytic lesions in the skull.
But this is rare as pus in the middle ear can drain out easily through a hole in the eardrum or into the mastoid part of the temporal bone.