Abstract
A 62-year-old woman was evaluated for tinnitis and headache. Magnetic resonance
imaging and angiography revealed the coexistence of a tentorial tumor
encroaching the junction of the right transverse-sigmoid sinuses, and dural
arteriovenous fistulous malformation (AVFM) of the right transverse sinus. AVFM
was not manipulated at all during the surgery. The pathology was fibroblastic
meningioma. Postoperatively, the dural AVFM completely disappeared on follow-up
angiography. The fistulas were occluded also after surgery, even though there
was no manipulation of the AVFM. It is suggested that the right dominant
transverse-sigmoid sinuses are partially occluded by tentorial meningioma,
developing the dural arteriovenous fistula of the right transverse sinus. An
acquired origin of the dural AVFM was suggested in this case.