A system of practical medicine . d, but also theminute vessels entering the anterior perforated space. In such aninstance gross and most extensive destruction of brain tissue, with per-sistent hemiplegia of the opposite side, will result. However, it morefrequently happens that this vessel is obstructed just previous to thesubdivision of the vessel into its four great branches. It will be seenat once that should an embolism occur at this situation and upon theleft side of the brain, there would be, in addition to a marked hemi-plegia of the opposite side of the body, also aphasia both motor an
A system of practical medicine . d, but also theminute vessels entering the anterior perforated space. In such aninstance gross and most extensive destruction of brain tissue, with per-sistent hemiplegia of the opposite side, will result. However, it morefrequently happens that this vessel is obstructed just previous to thesubdivision of the vessel into its four great branches. It will be seenat once that should an embolism occur at this situation and upon theleft side of the brain, there would be, in addition to a marked hemi-plegia of the opposite side of the body, also aphasia both motor andsensory. In such a lesion the third frontal convolution and the firsttemporal convolution would undergo softening, as well as the ascendingfrontal and ascending parietal convolutions. It can be readily under-stood that the symptoms will vary if the obstruction, instead of takingplace at this point, will take place in any one of the subdivisions of thevessel. Embolism secondary to cardiac disease is far more frequent in Fig. A lesion in the capsule gives rise to a hemiplegia of the oyiposite side of the hody, withoxit inter-fering with the nuclei of anv of the cranial nerves Lower down, however, in the crus, in thepons, or in the medulla these nuclei are involved, and >io-callcd alternate or crossed hemi-plegia is jiroduced. Thus at III. a lesion will produce a lieniiplegia of the opjiositc side of thenodv, ).his aTi oculomotor palsv on tlu same side: a lesion at Vll. will cause a hemiplegia ofthe ojipositc side of the hodv aiid a facial jialsy of the same side : a lesion at XII. will give riseto a hemiplegia of the o)iposite side ami a palsy of the tongue on the same side. the distril)uti()n of the middle cerebral than elsewhere. Embolism dueto purulent and infectious processes in the lung or pleural cavity mayaffect other vessels as well, but in such instances the sym])toms are less CEREBRAL EMBOLISM AND THROMBOSIS. 377 like those of an ordinary apoplectic attack, and
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Keywords: ., bookcentury1800, bookdecade1890, bookpublish, booksubjectmedicine
