An introduction to pathology and morbid anatomy / by T. Henry Green.

  • Green, T. Henry (Thomas Henry), 1841-1923
Date:
1900
Catalogue details

Licence: In copyright

Credit: An introduction to pathology and morbid anatomy / by T. Henry Green. Source: Wellcome Collection.

Provider: This material has been provided by The University of Leeds Library. The original may be consulted at The University of Leeds Library.

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    tion from the surface along the vessels. The membranes thus affected appear thickeneid locally or generally, the condition, depending ujion the age of the process. If it is of recent origin the inflammatory deposit may be soft and gelatinous, or greyish-red, or of a yellowish colour; if of some standing, the inflammatory process may have gone on to the formation of scar-tissue. Should the granulation-tissue form a tumour on the surface or in the substance of the brain, a gumma as distinguished from superficial gummatous meningitis occurs. Gummatous tumours may vary in size from a cherry-stone to a pigeon s egg (p. Sll). l-'iG. 313.—Sec/ion o] Gummatous Mass in Sylvian Fissure, showing almost completely obliterated vessels'recognisable as vessels only by the elastic coat, x 70. (Archives of Neurology, vol. i.) Gummata are particularly common about the base of the brain, in the neighbourhood of the optic chiasma, but they may occur in any part, and may even involve the dura mater and erode the skull, pro- jecting through externally. Naked-cifc appearance of Lite aiienes.—Y\\&y present little greyish- white nodules on one side usually, so that, when cut across transversely, the nodules present a half-moon api)earance. The vessels themselves feel stiff and cartilaginous between the fingers, and will not collapse on pressure. When there is universal arteritis, the vessels, small as well as large, appear ojjaque, dirty white in colour, and their walls thickened, so that they can be cut easily transversely, owing to the resistance they offer. Tlie vessels about the base are particularly