The report of an examination of both temporal bones from a hundred and twenty individuals in reference to the question of symmetry in health and disease / Arthur Cheatle.

  • Cheatle, Arthur.
Date:
[1912]
Catalogue details

Licence: In copyright

Credit: The report of an examination of both temporal bones from a hundred and twenty individuals in reference to the question of symmetry in health and disease / Arthur Cheatle. Source: Wellcome Collection.

Provider: This material has been provided by The Royal College of Surgeons of England. The original may be consulted at The Royal College of Surgeons of England.

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    2. fif M. 67. The antrum may be high lying and yet the middle fossa may dip down, partly shutting off the cavity from the surface as, on the right side, in -rri M. 45. There is no reliable external guide to a high lying antrum, except that a posterior zygomatic line which slopes downwards and backwards should put one on one’s guard. (iv) The sinus tympani or internal pyramidal recess cannot be examined in all specimens, but the sets, m M. 58, fur M. 64, deserve careful study, for an extraordinarily large cavity is seen on both sides in each. This cavity may be infected in suppuration and responsible for chronic discharge with or without antral infection and for the continuation of dis- charge after a radical operation has been performed. Unless the cavities are as large as these, it is practically impossible to deal with them without injury to the facial nerve; but if they are large they can be opened immediately below the external semi-circular canal and behind the level of the descending part of the facial nerve, cleaned of contents and laid well open into the bony wound, as in a case of a boy, aged 9 years, described by myself in the ‘ Transactions of the Royal Society of Medicine, Otological Section,’ vol. iv. No. 4, p. 54. It is interesting to note that Mr. Gr. J. Jenlcins considers this cavity as the upper end of the first branchial cleft. The diagnosis of disease in this cavity cannot be dealt with in this paper. (v) Malformation of the bony external semi-circular canal is seen in 191, the right bone of a woman, aged 61 years. The canal is represented by a single large cavity opening