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Christopher Mark Milroy, MB, ChB; Leslie Michaels, MD, FRCPath, FRCPC

Arch Otolaryngol Head Neck Surg. 1990;116(1):79-84.

Abstract
• We present the pathologic features in the temporal bones of a 62-year-old woman with the adult benign form of osteopetrosis. Most of the bony tissue was expanded by dense lamellar bone, with, in some places, the presence of residual calcified cartilage. In the otic capsule, globuli interossei were greatly increased in number. The ossicles were enlarged with fixation of the stapes. Narrowing of mastoid air cells, the internal auditory meati, and eustachian tubes was present, the latter associated with chronic otitis media. The bone deposition in the ossicles contributed to the conductive hearing loss, which was a prominent feature in this patient's otologic findings. The narrowing of the internal auditory meati may similarly have contributed to a degree of sensorineural hearing loss.

(Arch Otolaryngol Head Neck Surg. 1990;116:79-84)

Author Affiliations
From the Department of Histopathology, University College and Middlesex School of Medicine, London, England.

Footnotes
Accepted for publication January 31, 1989.

Reprint requests to Department of Histopathology, University College and Middlesex School of Medicine, Institute of Laryngology and Otology, 330/332 Gray's Inn Rd, London WC1X 8EE, England (Dr Milroy).

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