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The mastoid process is the portion of the temporal bone of the skull that is behind the ear. The mastoid process contains open, air-containing spaces . [ 2 ] [ 3 ] Mastoiditis is usually caused by untreated acute otitis media (middle ear infection) and used to be a leading cause of child mortality.
The mastoid cells (also called air cells of Lenoir or mastoid cells of Lenoir) are air-filled cavities within the mastoid process of the temporal bone of the cranium. The mastoid cells are a form of skeletal pneumaticity. Infection in these cells is called mastoiditis. The term cells here refers to enclosed spaces, not cells as living ...
385 Other disorders of middle ear and mastoid. 385.0 Tympanosclerosis; 385.1 Adhesive middle ear disease; 385.2 Other acquired abnormality of ear ossicles; 385.3 Cholesteatoma of middle ear and mastoid; 385.8 Other; 385.9 Unspecified; 386 Vertiginolls syndromes and other disorders of vestibular system. 386.0 Ménière's disease; 386.1 Other and ...
The mastoid part of the temporal bone is the posterior (back) part of the temporal bone, one of the bones of the skull. Its rough surface gives attachment to various muscles (via tendons) and it has openings for blood vessels. From its borders, the mastoid part articulates with two other bones.
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The first potential documented case of a mastoidectomy procedure was recorded in 1524 by Lucas van Leyden as an incision behind the right ear. Abscess drainage was popularized by Adam Politzer , considered to be one of the founders of otology and initially interpreted Galen's writings on ear discharge to mean that Galen removed infected mastoid ...
Myringosclerosis refers to a calcification only within the tympanic membrane and is usually less extensive than intratympanic tympanosclerosis, which refers to any other location within the middle ear such as the ossicular chain, middle ear mucosa or, less frequently, the mastoid cavity. [3]
Tympanic membrane retraction describes a condition in which a part of the eardrum lies deeper within the ear than its normal position.. The eardrum comprises two parts: the pars tensa, which is the main part of the eardrum, and the pars flaccida, which is a smaller part of the eardrum located above the pars tensa.