Identifier: pathologicalanat00schwrich (find matches)
Title: The pathological anatomy of the ear
Year: 1878 (1870s)
Authors: Schwartze, Hermann Green, John O. (John Orne), 1841-
Subjects: Ear -- Diseases
Publisher: Boston, Houghton, Osgood and company
Contributing Library: University of California Libraries
Digitizing Sponsor: MSN

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esses from the ear tothe brain. Pneumaticity of the parspetrosa is understood tobe the existence of anom-alous cavities in the bone. Congenital Defect of the Bone on the ^^,;^-^1^ ^^.^ f^^lecl with airupper surface of the pars petrosa near its apex, and also in the sigmoid shius; otitis Or witll a gclatiuOUS red media purulenta acuta without perforation x- ThpV SUrrOUnd the of the drum membrane, resulting in fatal LlSSUC. 1 UCy SUrrOUnU lUe basilar meningitis, a. Porus acusticus in- labvriuth OU all sidcS, CX- ternus. b, c. Gaps in the upper surface , t i ii of the petrous bone. d. Gaps in the sulcus tcnduig CVCU tO thc UppCr transversus. ^yr^\\ of the mcatus audi- torius, and are in direct connection with the mastoidcells. Hypersemia of the petrous bone in which the tissueof the bone is very rich in blood, and when lookedat through the dura mater often appears of a bluishred color, is very common m typhus, and is also seenin variola. A general atrophy of the bone, in which it appears
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THE TEMPORAL BONE. 11 abnormally light in weight and fragile, occurs in oldage and with lues, tumors of the brain, and from otherunknown causes (for instance, in connection with an-chylosis of the stapes). Osteoporosis occurs in old age and produces open-ings in the bone of the anterior wall of the meatus(Von Troeltsch). Hyperostosis, in which the temporal bone appearsvery heavy and massive, its processes larger andfuller, its openings and capillary canals smaller andnarrower than natural, is generally combined with auniversal hyperostosis of the skull (syphilis, old age),but it may be confined to certain parts of the petrousbone, as the meatus extern us, processus mastoideus,tuba Eustachii, canalis caroticus, and it is then fre-quently the result of continuous hypersemia and longexisting suppurative processes (with caries). If the hyperostosis is the result of ossifying perios-titis in foetal life or early childhood, it always leads togreat deafness and deafmutism. The labyrinthinefe

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