Diseases of the ear / by Hunter Tod.

  • Tod Hunter, 1871-1923.
Date:
1907
Catalogue details

Licence: In copyright

Credit: Diseases of the ear / by Hunter Tod. Source: Wellcome Collection.

Provider: This material has been provided by the Royal College of Physicians of Edinburgh. The original may be consulted at the Royal College of Physicians of Edinburgh.

    69/380 (page 39)
    the bony portion of the external meatus comes into view, the membranous part is carefully separated from it, exposing the growth. [a) If the exostosis is on the posterior, postero-superior, or inferior wall, it is removed by chiselling with a gouge. (b) If the exostosis is deeply situated, it is more easily removed by first chiselling away part of the posterior wall of the external meatus. The antrum must not be exposed, and care must be taken not to cut too deeply, in order to avoid wounding the tympanic membrane. If the exostosis springs from the anterior wall, it is necessary to make a longitudinal incision through the posterior membranous portion of the auditory canal. The cut surfaces are held apart by means of forceps, bringing into view the anterior waU of the external meatus. The exostosis can now be removed by means of a gouge. After removal, the auricle is restored to its normal position, the wound dried and its edges sutured together ; the auditory canal being packed with gauze. (3) A complete mastoid operation is indicated if marked obstruction of the external meatus exists in a case of middle ear suppu- ration and is imperative if there are symptoms of retention of pus. DiffiouUies of the operation.—Tliis operation should not be lightly undertaken as it is often very difficult, and the results are not always satisfactory. (1) If the exostoses are deeply situated, the tympanic membrane may be injured, resulting in middle ear sup- puration. (2) When the growths spring from the anterior border, owing to the incision in the posterior wall and the necessary wounding of the anterior wall to remove