Vol 70, No 4 (2011)
Case report
Published online: 2011-11-25
Anatomical variants of the emissary veins: unilateral aplasia of both the sigmoid sinus and the internal jugular vein and development of the petrosquamosal sinus. A rare case report
Folia Morphol 2011;70(4):305-308.
Abstract
We report a case of hypoplasia of the right transverse sinus and aplasia of the
ipsilateral sigmoid sinus and the internal jugular vein. In addition, development
of the petrosquamosal sinus and the presence of a large middle meningeal sinus
and sinus communicans were observed. A 53-year-old Caucasian woman was
referred for magnetic resonance imaging (MRI) investigation due to chronic headache.
On the MRI scan a solitary meningioma was observed. Finally MR 2D venography
revealed this extremely rare variant. (Folia Morphol 2011; 70, 4: 305–308)
Keywords: hypoplasiaright transverse sinusaplasiaipsilateral sigmoid sinuspetrosquamosal sinusinternal jugular vein