Basal hernias of the brain / by Christian Fenger.

  • Fenger, Christian, 1840-1902.
Date:
1895
Catalogue details

Licence: Public Domain Mark

Credit: Basal hernias of the brain / by Christian Fenger. Source: Wellcome Collection.

Provider: This material has been provided by The Royal College of Surgeons of England. The original may be consulted at The Royal College of Surgeons of England.

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    stance surrounding a cavity clad with endothelium. Although no layer of white brain substance was present, there is no doubt that this cavity was a continuation of a ventricle, probably the third ventricle. Its regular shape, and the fact of its being entirely surrounded by a layer of cortical brain substance, makes it distinctly different from the serous cavities which we find in hernias of the brain as well as of the spinal cord, developed from, or an exaggeration of, the subarachnoid lymph-spaces. Fig. 6. It will probably always be difficult, if not impossible, to state at the outset whether a nasal polypus is or is not a hernia of the cerebrum. This is especially true in meningoceles and encephaloceles, in which the tumor is not compressible. In hydrencephaloceles the compressibility of the tumor, followed by return to its former size, as in my case, will lead us to suspect communication with the cranial cavity. Aspiration with the hypodermatic needle when the tumor is not compressed may bring out cerebro-spinal fluid and lead to a positive diagnosis. That this procedure was not successful in my case was due to the fact that the needle entered the peripheral solid portion of the tumor, and I believe that repeated attempts, through the nostrils, for instance, would eventually have resulted in the withdrawal of cerebro-spinal fluid. The location of the pedicle should also be considered; when it ex-