Deaf-mutism / by Holger Mygind.

  • Mygind Holger, 1855-1928.
Date:
1894
Catalogue details

Licence: Public Domain Mark

Credit: Deaf-mutism / by Holger Mygind. 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.

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    The cavity of the vestibule was contracted by formation of bone. All the semicircular canals were absent, being substituted by an osseous mass. The cochlea was also filled with an osseous mass. LX.—PoLiTZER, A., 1882 [ibid, p. 822]. A boy, aged 9 ; com- plete deafness after an acute disease (which occurred after he had been subject to convulsions for a whole year during his third year), and which lasted eight days, and was connected with coma, followed by staggering gait; died from acute meningitis. The base of the stapes adhered to a membrane in the vestibule. The ganglionic layer of the canal of Rosenthal was atrophic in the first turn of the cochlea, and the nerve fibres to the lamina spiralis ossea, also the auditory teeth were wanting. L., only a narrow margin was left of the membrana tympani, in which small deposits of a calcareous mass were present. LXI.—UcHERMANN, 1883 [207, p. 70]. A male, aged i8, whose deafness was due to scarlet fever when 2j years old ; died from tuberculosis. The fenestra rotunda was closed by a bony plate. The convolution of Broca was somewhat more narrow than usual; the gyrus temporalis superior being thinner than normal. R., there was osseous anchylosis of the stapes. The vestibule was contracted and lined with thickened periosteum, and presented no membranous contents. The semicircular canals were replaced by a tube of one-and-a-half centimetres length, representing the superior canal and filled with fibrous tissue. Only the outlines of the cochlea were visible, its cavity being re- placed by osseous tissue, except the first turn which formed a small cavity. L., the membrana tympani was perforated in four different places; the tympanic cavity and all the cavities of the petrous bone being filled with pus and detritus. LXII.—ScHULTZE, Fr., 1885 [186', p. i]. A girl, aged 13, who became completely deaf in her ninth year while suffering fro.n symptoms of meningitis (cerebro-spinal meningitis?). Had the entire labyrinth filled with osteoid tissue and round cells. Atrophy of the auditory nerve existed. L., the striae acusticse were absent. LXIII.—Larsen, p. C, and Mygind, Holger, 1889 [188, p. 188]. A man, aged 27; completely deaf from a disease resembling meningitis (probably epidemic cerebro-spinal meningitis) when two years old ; died from tubsrculosis. The bases of the stapes was absent; the fenestra ovalis was closed partially by a mem-