The human brain : histological and coarse methods of research : a manual for students and asylum medical officers / by W. Bevan Lewis.

  • Lewis, William Bevan, 1847-1929.
Date:
1882
Catalogue details

Licence: Public Domain Mark

Credit: The human brain : histological and coarse methods of research : a manual for students and asylum medical officers / by W. Bevan Lewis. Source: Wellcome Collection.

Provider: This material has been provided by King’s College London. The original may be consulted at King’s College London.

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    the sinus and the veins on the outside of the skull at the back of the head, may hecome plugged by a thrombus producing a painful oedema behind the ear, also recognized clinically by Griesinger.^ 4. The position of the 'petrosal and lateral sinuses naturally exposes them to phlebitis and thrombosis. Lying on the petrous portion of the temporal bone, they are always liable to be implicated by extension of inflammation from the internal ear and caries of the temporal bone. 5. Thrombosis of the cavernous sinus has been frequently noted. In connection with this condition the student must be prepared to note the pressure which will probably result to the carotid artery, which runs through this sinus invested by its lining membrane.^ He may also look for extension of inflammation of the coats of this sinus to the facial veins with which the ophthalmic vein communicates, noting the obstruction to the return of blood from the cavity of the orbit. 6. Amongst other results of thrombosis of the cerebral veins and sinuses, will often be found punctiform hsemor- rhages into the substance of the brain. General Appearance at the Base.—Observe the con- dition of the dura mater at the base, where there exists a special proclivity to disease. The sites alluded to are :— 1. Petrous portion of temporal bone. 2. Ethmoidal plate. 3. Parts adjoining superior cervical vertebrae. 1 Quoted by Niemeyer in Text-Book of Practical Medicine, vol. ii. 2 This condition has been recognized clinically by a loud bruit heard on auscultation of the skull. Dowse, etc. Lancet.