Rare and combined vertebrobasilar dysplasias related to vascular maldevelopment at different embryonal stages
Voigt, K.; Stoeter, P.
Radiologia Clinica 44(3): 182-191
1975
ISSN/ISBN: 0376-6748 PMID: 1135407 Document Number: 94034
Angiographically demonstrated combined and complex angiodysplasias of the vertebrobasilar system are rare. As in our case, they can be attributed to a vascular maldevelopment in several consecutive embryonal stages: the angioma-like arterial network of the left posterior cerebral artery and the non-union and overcrossing of the vertebral arteries in the region of the prepontine cistern represent an early defect (up to 15 mm stage); the aneurysmatic ectasia of the right vertebral artery with a second pedunculated aneurysm at its uppermost part may be due to a later defect (up to 40 mm stage) of the cerebral vascular development.