[Vascular malformation in cranial computerized tomography (author's transl)].

Aneurysms and vascular hamartomas, unless too small, may be diagnosed by computerized tomography. In particular, larger arteriovenous malformations and venous angiomas present a fairly typical appearance. Smaller angiomas produce mostly atypical findings and require additional cerebral angiography. Spontaneous intracerebral parenchymal or subarachnoidal haemorrhage is mostly caused by arterial hypertension and/or arteriosclerosis. However, vascular malformations are an important additional cause of bleeding. Demonstration of intracranial haemorrhage is a domain of computerized tomography. Occasionally, an angioma may be revealed. However, the source of bleeding can usually be shown more conclusively by cerebral angiography, an invasive method.