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Martin H. Weiss

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Martin H. Weiss

✓ The author provides a brief history of the genesis of organized neurosurgery and, in particular, the formation and evolution of the American Association of Neurological Surgeons. The legacy of neurosurgery is noted and the author discusses the present and future practice of neurosurgery.

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Martin H. Weiss and Uros Roessmann

✓ Hydrocephalic animals were given an intraventricular infusion of radioactive colloidal gold and then sacrificed up to 7 weeks after infusion. Histological evaluation revealed progression from a marked hemorrhagic necrosis of choroid plexus vessels and stroma to eventual replacement by fibrous connective tissue, sclerosis, and fibrinous degeneration of stromal vessels. Particulate colloid was found engulfed in perivascular spaces in the subependymal periventricular tissues, but there was no evidence of vascular damage, gliosis, or demyelination. These findings may play a role in decreasing cerebrospinal fluid production.

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Martin H. Weiss and John A. Jane

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Martin H. Weiss and Frank E. Nulsen

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Editorial

Pituitary surgery

Martin H. Weiss

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Martin H. Weiss, Frank E. Nulsen and Benjamin Kaufman

✓ Hydrocephalic dogs treated with intraventricular radioactive colloidal gold showed a sustained decrease in cerebrospinal fluid flow and intraventricular pressure associated with a reversal of progressive hydrocephalus. Gamma scanning and isotopic sampling, however, indicated a more diffuse distribution of the isotope than previously thought, although pathological changes up to 7 weeks post-instillation of the radioactive colloid appeared confined to the choroid plexus.

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Jane C. S. Perrin, Martin H. Weiss and David Yashon

✓ A family with craniofacial dysostosis affecting a father and his monozygotic twin sons is described. The father had no surgery until linear craniectomy when 3 years old; he is of normal intelligence but legally blind. Prophylactic coronal craniectomy and orbital decompression were done on the twins. One had an uncomplicated course and is developing normally. The other developed neonatal meningitis and ventriculitis with secondary hydrocephalus, plus poor vision and retarded development.

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Martin H. Weiss, Harold F. Young and Dee E. McFarland