Biomaterial Database

Osteoma of the internal auditory canal. Case report and literature review. 1994

D M Clerico, and A F Jahn, and S Fontanella

Department of Otorhinolaryngology-Head and Neck Surgery, Hospital of the University of Pennsylvania, Philadelphia.

Osteomas of the internal auditory canal are rare lesions, with only 12 reported cases in the world literature. Symptoms are those of eighth nerve compression, and include unilateral hearing loss and vestibular weakness, thus mimicking symptoms of acoustic neuroma. We report a patient with an osteoma of the internal auditory canal, along with a review of the literature. We note age and sex characteristics from the literature, give evidence of localized trauma as a possible etiologic factor for this lesion, and discuss the pitfalls of relying exclusively on magnetic resonance imaging in the workup of suspected retrocochlear lesions.

UI	MeSH Term	Description	Entries
D008875	Middle Aged	An adult aged 45 - 64 years.	Middle Age
D009408	Nerve Compression Syndromes	Mechanical compression of nerves or nerve roots from internal or external causes. These may result in a conduction block to nerve impulses (due to MYELIN SHEATH dysfunction) or axonal loss. The nerve and nerve sheath injuries may be caused by ISCHEMIA; INFLAMMATION; or a direct mechanical effect.	Entrapment Neuropathies,Nerve Entrapments,External Nerve Compression Syndromes,Internal Nerve Compression Syndromes,Nerve Compression Syndromes, External,Nerve Compression Syndromes, Internal,Compression Syndrome, Nerve,Compression Syndromes, Nerve,Entrapment, Nerve,Entrapments, Nerve,Nerve Compression Syndrome,Nerve Entrapment,Neuropathies, Entrapment,Neuropathy, Entrapment,Syndrome, Nerve Compression,Syndromes, Nerve Compression
D010016	Osteoma	A benign tumor composed of bone tissue or a hard tumor of bonelike structure developing on a bone (homoplastic osteoma) or on other structures (heteroplastic osteoma). (From Dorland, 27th ed)	Osteomas
D010579	Petrous Bone	The dense rock-like part of temporal bone that contains the INNER EAR. Petrous bone is located at the base of the skull. Sometimes it is combined with the MASTOID PROCESS and called petromastoid part of temporal bone.	Petrous Apex,Petrous Pyramid,Bone, Petrous,Petrous Bones
D005260	Female		Females
D006801	Humans	Members of the species Homo sapiens.	Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000160	Vestibulocochlear Nerve Diseases	Pathological processes of the VESTIBULOCOCHLEAR NERVE, including the branches of COCHLEAR NERVE and VESTIBULAR NERVE. Common examples are VESTIBULAR NEURITIS, cochlear neuritis, and ACOUSTIC NEUROMA. Clinical signs are varying degree of HEARING LOSS; VERTIGO; and TINNITUS.	Acoustic Nerve Diseases,Cochlear Nerve Diseases,Cranial Nerve VIII Diseases,Vestibular Nerve Diseases,Acoustic Nerve Disorders,Cochlear Nerve Disorders,Cochlear Neuritis,Cranial Nerve VIII Disorders,Eighth Cranial Nerve Diseases,Vestibular Nerve Disorders,Acoustic Nerve Disease,Acoustic Nerve Disorder,Cochlear Nerve Disease,Cochlear Nerve Disorder,Cochlear Neuritides,Neuritides, Cochlear,Neuritis, Cochlear,Vestibular Nerve Disease,Vestibular Nerve Disorder,Vestibulocochlear Nerve Disease
D012888	Skull Neoplasms	Neoplasms of the bony part of the skull.	Neoplasms, Skull,Neoplasm, Skull,Skull Neoplasm