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Enlarging subependymal cyst: case report

C H Rabb1, M L Levy, J G McComb

  • 1Division of Neurosurgery, Children's Hospital Los Angeles, California, USA.

Neurosurgery
|April 1, 1995
PubMed
Summary
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A rare cystic lesion in an infant with Dandy-Walker malformation progressively enlarged over a year. Biopsies ruled out neoplasia, marking the first reported case of such a growing cyst.

Area of Science:

  • Neuroscience
  • Pediatric Neurology
  • Developmental Neurobiology

Background:

  • Dandy-Walker malformation is a congenital brain defect.
  • Hydrocephalus is a common complication requiring intervention.
  • Ventriculoperitoneal shunts are used to treat hydrocephalus.

Observation:

  • A 1-month-old infant with Dandy-Walker malformation presented with hydrocephalus.
  • A subependymal cystic lesion was identified in the right caudate nucleus.
  • The lesion showed significant enlargement from 1 cm to 3 cm over one year.

Findings:

  • Despite biopsy during fenestration, no neoplastic cells were identified.
  • This represents the first documented case of a spontaneously enlarging subependymal cyst in this location.

Related Experiment Videos

  • The cyst's progressive growth in the absence of neoplasia is a unique finding.

    • Implications:

    • This case highlights the importance of monitoring unexpected cystic lesions in infants with congenital brain anomalies.
    • Further research may be needed to understand the etiology and behavior of such non-neoplastic, growing cysts.
    • This finding could influence diagnostic and management strategies for similar pediatric neurological cases.