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Persistent falcine sinus: is it really rare?

C-W Ryu1

  • 1Department of Radiology, Kyunghee East-West Neo Medical Center, Kyunghee University, Collage of Medicine, Seoul, Korea. md.cwryu@gmail.com

AJNR. American Journal of Neuroradiology
|September 26, 2009
PubMed
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Falcine sinuses, a venous pathway in the brain, are not rare in adults. Most cases are not linked to congenital issues, making them important findings in brain CT angiography (CTA) interpretation.

Area of Science:

  • Neuroanatomy
  • Vascular Radiology
  • Cerebral Venous Anatomy

Background:

  • The falcine sinus is a rare venous pathway variation within the dura mater.
  • Previous literature suggests a low incidence in the adult population.

Purpose of the Study:

  • To determine the incidence of falcine sinus.
  • To characterize the anatomical features of the falcine sinus using CTA.

Main Methods:

  • Computed Tomography Angiography (CTA) was used.
  • 586 consecutive patients were analyzed.
  • Falcine sinus defined as a midline venous structure connecting specific cerebral veins.

Main Results:

  • Falcine sinuses were identified in 12 patients (2.1% incidence).

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  • One case was associated with a dysplastic tentorium.
  • Most falcine sinuses were not linked to congenital anomalies or sinus occlusion.

    • Conclusions:

    • Falcine sinuses are more common than previously reported in adults.
    • Recognition of falcine sinuses is crucial for accurate brain CTA interpretation.
    • Most identified falcine sinuses were incidental findings without associated pathology.