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Dorsal brain stem lipomas: case report

S S Baeesa1, M J Higgins, E C Ventureyra

  • 1Division of Neurosurgery, Children's Hospital of Eastern Ontario, Ottawa, Canada.

Neurosurgery
|May 1, 1996
PubMed
Summary
This summary is machine-generated.

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Symptomatic dorsal brain stem lipomas can now be surgically treated with microsurgery, offering a direct alternative to cerebrospinal fluid diversion. This approach successfully resolved symptoms in patients without neurological deficits or the need for shunts.

Area of Science:

  • Neurosurgery
  • Neuroradiology
  • Developmental Biology

Background:

  • Intracranial lipomas are rare lesions, comprising 0.06–0.46% of intracranial masses.
  • Dorsal brain stem lipomas, though uncommon, can cause significant symptoms.
  • Historically, management was limited to cerebrospinal fluid diversion.

Observation:

  • Three cases of dorsal brain stem lipomas are presented: two in the quadrigeminal cistern and one in the cisterna magna.
  • One case featured the first reported in utero diagnosis of a quadrigeminal cistern lipoma via ultrasound.
  • Diagnostic imaging included computed tomography and magnetic resonance imaging scans.

Findings:

  • Two symptomatic patients underwent successful microsurgical decompression.
  • Postoperative outcomes were positive, with symptom resolution and no neurological deficits.

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  • No patients required permanent cerebrospinal fluid shunts.

    • Implications:

    • Microsurgery offers a viable and effective treatment for symptomatic dorsal brain stem lipomas.
    • This approach avoids the need for cerebrospinal fluid shunts in many cases.
    • An updated management algorithm for these rare tumors is proposed.