Extra-luminal sigmoid sinus granulation tissue resulting in otitic hydrocephalus

Andrew K. Johnson, Brandon Isaacson

Research output: Contribution to journalArticlepeer-review

1 Scopus citations


Summary A four-year-old male presented to the emergency department with bilateral cranial nerve VI palsy following a failed outpatient course of antibiotics for acute mastoiditis. Imaging revealed a right sigmoid sinus flow defect. Urgent mastoidectomy with removal of the right sigmoid sinus osseous plate was performed. Intraoperatively, extensive granulation tissue was encountered compressing the sinus. The cranial nerve deficit resolved overnight, and follow-up imaging revealed restoration of venous outflow. As a result, the flow void was determined to be a result of compression of the sinus rather than thrombosis, and a prolonged course of systemic anticoagulation was avoided.

Original languageEnglish (US)
Pages (from-to)5-6
Number of pages2
JournalInternational Journal of Pediatric Otorhinolaryngology Extra
StatePublished - Mar 1 2016


  • Lateral sinus thrombosis
  • Mastoidectomy
  • Mastoiditis
  • Otitis media
  • Sigmoid sinus thrombosis

ASJC Scopus subject areas

  • Pediatrics, Perinatology, and Child Health
  • Otorhinolaryngology


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