. The pathological anatomy of the ear . bone is also destroyedby the new growth, h. Porus acusticus internus. c. Foramen lacerum Foramen ovale, enlarged by destruction of its edges to twice its natural circum-ference, e. Foramen spinosum. f. Sphenoid articulation. i-ocher, Rokitansky considers sliould probably be regarded as can-cer, although in the first case, Avhich is the most fully described andfigured, Cruveilhier expressly adds, ne presentait pas le moindre 1 Wiener Med. Halle, 1863, Nos. 45, 46. 2 Edinh. Med. and Surg. Journ., xviii., p. 393. 3 Transactions of the American O
. The pathological anatomy of the ear . bone is also destroyedby the new growth, h. Porus acusticus internus. c. Foramen lacerum Foramen ovale, enlarged by destruction of its edges to twice its natural circum-ference, e. Foramen spinosum. f. Sphenoid articulation. i-ocher, Rokitansky considers sliould probably be regarded as can-cer, although in the first case, Avhich is the most fully described andfigured, Cruveilhier expressly adds, ne presentait pas le moindre 1 Wiener Med. Halle, 1863, Nos. 45, 46. 2 Edinh. Med. and Surg. Journ., xviii., p. 393. 3 Transactions of the American Otological Societi/, 1870. 4 Anatonde Palliohgique du Corps Humain, ii., xxvi., planche 2. 28 PATHOLOGY OF THE EAR. vestige de degeneration cancereuse, From a remark of Cruveil-hiers, it seems to be implied, that he had frequently found tumorsoriginating from the posterior and anterior surfaces of the petrousbone. Ces tumeurs sont tantot fibreuses, tantot osteo-fibreuses:dautres fois, elles presentent la degeneration cancereuse dans une. Destruction of the Petrous Bone by a Fibrous Tumor, from Cruveilhier. Thetumor originated apparently from the extension of the dura mater into the porusacusticus internus. The openings in the bone involve the inner half of the posteriorsurface of the pars petrosa. communicate extensively with the eanalis caroticus, andunite the meatus auditorius internus, which cannot be recognized, with the foramenlacerum posterius. partie de leur etendue. La description des tumeurs du rocher me-riterait de trouver place dans Ihistoire des tumeurs developpeesdans le crane, etc. Death generall} results from marasmus orpressure on the brain, sometimes from basilar meningitis. Foiyc/, Handbuch der Patholog. Anatomie. Halle. 1804. — MecM,Handbuch der Patholog. Anatomie. I. S. 400-40G. — Beck, Krankheitendes Gehororgans. Heidelberg und Leipzig:, 1827. S. 106. — Mich. Jdr/er,Klin. Beobachtungen iiber Augen- und Oln-krankheiten (Von Amnion
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