External hydrocephalus. Early finding in congenital communicating hydrocephalus.

@article{Robertson1978ExternalHE,
  title={External hydrocephalus. Early finding in congenital communicating hydrocephalus.},
  author={William C. Robertson and M. Rodriguez Gomez},
  journal={Archives of neurology},
  year={1978},
  volume={35 8},
  pages={541-4}
}
Dilation of the subarachnoid channels overlying the cerebral hemispheres, ie, external hydrocephalus, can be an early anatomic-radiologic finding in some infants with congenital communicating hydrocephalus. This structural change may progress to ventricular dilation or internal hydrocephalus. Enlargement of the subarachnoid channels appears to occur during… CONTINUE READING