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July 1959

Intranasal Encephalomeningoceles Associated with Cranium Bifidum

Author Affiliations

Rochester, Minn.
Section of Neurologic Surgery (Drs. Dodge and Love); Section of Pathologic Anatomy (Dr. Kernohan), Mayo Clinic and Mayo Foundation. The Mayo Foundation, Rochester, Minn., is a part of the Graduate School of the University of Minnestota.

AMA Arch Surg. 1959;79(1):75-84. doi:10.1001/archsurg.1959.04320070079014

The recommendation of innumerable surgical procedures for a given condition is Prima facie evidence that ultimate cure is difficult to attain. This has been especially true in the development of surgical techniques for the repair of anteriorly located encephalomeningoceles. It is our purpose to present an outline of the already wellknown basic facts about these intriguing and difficult surgical lesions; to consider briefly a number of types of surgical repair previously reported, and then to describe our method of operation.

Extracranial prolongation of brain tissue with its non-nervous coverings, the encephalomeningocele, occurs usually in the midline of the cranial vault at the frontal or occipital poles. The great majority of encephalomeningoceles are situated in the occipital region, while only about 15% to 20% are nasofrontal or anterior in location. Lateral herniation apparently is extremely rare and is said by some not to have been observed.

The incidence of encephalomeningoceles has

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