Unusual caudal terminations of the inferior petrosal sinus (IPS) characterized by an extracranial extension joining the internal jugular vein up to 40 into below the external skull base are reported. This variation was observed bilaterally on an anatomical specimen and unilaterally on four patients during diagnostic cerebral angiography. It may be considered an accessory internal jugular vein and, if present, may allow for an alternate endovascular access to the IPS.
|Original language||English (US)|
|Number of pages||5|
|State||Published - Mar 11 1997|
- dural sinus
- interventional neuroradiology
- jugular vein
ASJC Scopus subject areas