Epidermal cyst attached to the chorda tympani nerve.
The incidental post-mortem finding of a small epidermal cyst in the middle ear of a 78-year-old female is presented. The epidermal cyst was attached to the chorda tympani nerve adjacent to the body of the incus, but was not associated with bony erosion or any other suggestion of enlargement or invasive growth. The pathological relationship of this lesion to previously reported "congenital cholesteatomas" of the middle ear is discussed.
Youngs
R
R
Ear Pathology Research Laboratory University of Toronto, Ontario, Canada.
Kwok
P
P
Hawke
M
M
D000368:Aged; D002781:Cholesteatoma / Q000473:pathology; D002814:Chorda Tympani Nerve / Q000473:pathology*; D003389:Cranial Nerve Diseases / Q000473:pathology; D004427:Ear Diseases / Q000473:pathology; D004432:Ear, Middle / Q000473:pathology; D004814:Epidermal Cyst / Q000473:pathology*; D005260:Female; D006801:Humans