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[Endolymphatic sac tumors].

J M Thomassin1, P H Roche, F Braccini

  • 1Service d'OtoNeurochirurgie, Fédération ORL-CHU Timone, 264 rue St Pierre, 13385 Marseille cedex 5.

Annales D'Oto-Laryngologie Et De Chirurgie Cervico Faciale : Bulletin De La Societe D'Oto-Laryngologie Des Hopitaux De Paris
|November 21, 2000
PubMed
Summary
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Endolymphatic sac tumors, rare in Von Hippel Lindau disease patients, present with hearing loss and dizziness. Surgical excision is crucial for complete removal and preventing recurrence.

Area of Science:

  • Otolaryngology
  • Neurosurgery
  • Oncology

Background:

  • Endolymphatic sac tumors (ESTs) are rare neoplasms, often associated with Von Hippel Lindau (VHL) disease.
  • These tumors typically arise within the intrapetrosal or distal endolymphatic sac.

Observation:

  • ESTs exhibit slow growth with potential for lateral and medial extension.
  • Symptoms commonly include sudden sensorineural hearing loss, tinnitus, and dizziness, with medial extension potentially causing cerebellopontine angle syndrome.

Findings:

  • Diagnosis relies on CT and MRI, revealing heterogeneous, hypervascular tumors with cystic components and bone lysis.
  • Histological examination identifies papillary cystadenomas, requiring differentiation from choroid plexus papillomas.

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Implications:

  • Complete surgical excision is essential for managing ESTs and preventing recurrence.
  • Surgical approaches include retrosigmoid or transpetrosal techniques for optimal tumor removal.