Benign enlargement of subarachnoid spaces

Case contributed by Dr Khairy Abdella


9 months old boy with increased head circumference

Patient Data

Age: 9 months
Gender: Male
  • widening of the bi-frontal and anterior inter-hemispheric CSF spaces
  • no flattening of adjacent gyri.
  • normal sulci posteriorly.
  • nearly normal ventricular size with no pressure effects on the surrounding brain tissue

Case Discussion

Benign enlargement of the subarachnoid spaces in infancy (BESS) also known as benign external hydrocephalus (BEH), a benign enlargement of subarachnoid spaces seen in infancy. It is characterized clinically by macrocephaly or frontal bossing.

It usually occurs in males than females. It has familial predilection.  The condition resolves spontaneously by the age of 2 years.

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Case information

rID: 38503
Published: 29th Jul 2015
Last edited: 14th Aug 2019
Tag: crop
Inclusion in quiz mode: Included

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