J Korean Radiol Soc.  1988 Dec;24(6):949-956. 10.3348/jkrs.1988.24.6.949.

Angiographically occult arteriovenous malformations causing intracerebral hemorrhage

• Oh YW
• Kim JH

• KMID: 2359164
• DOI: http://doi.org/10.3348/jkrs.1988.24.6.949

Abstract

We had experienced 5 cases of angiographically occult AVMs led to itracerebral hemorrhage and progressiveneurologic deficit and seizure. Cerebral angiography in each case failed to demonstrate the vascular nature of thelesion and conventional skull radiography was no use. CT in 4 cases out of 5, showed well demarcated, slightlyhyperdense and ovoid masses which turned out resolving hematomas. These lesions had also contained focal areas ofhigh densities. In one case we observed definitely enhanced area in the resolving hematoma and it was correspondedto histopathologically proved AVM. CT appearance of acute hemorrhage at the subcortical region of cerebralhemisphere was showed in another case. We believe that CT can affored important supplementary informationregarding an associated hematoma for angiographically occult AVM. Caution is advised in assuming thatangiographically avascular lesion demonstrable by CT is not vascular malformation.

MeSH Terms

Arteriovenous Malformations*
Cerebral Angiography
Cerebral Hemorrhage*
Hematoma
Hemorrhage
Radiography
Seizures
Skull
Vascular Malformations