Angiographically occult arteriovenous malformations

C. S. Ogilvy, Roberto Heros, R. G. Ojemann, P. F. New

Research output: Contribution to journalArticle

64 Citations (Scopus)

Abstract

Eight cases of histopathologically proven arteriovenous malformations (AVM's) which were not visualized on angiography are presented. As is typical with these lesions, most of the patients in this series presented with hemorrhage, seizures, or episodic or progressive neurological symptoms suggestive of a neoplasm. The diagnosis of angiographically occult AVM was highly suspected preoperatively in each case based on the combination of computerized tomography (CT) and magnetic resonance (MR) findings. The CT scans in all caes showed moderately hyperdense lesions which enhanced mildly or moderately in a nonhomogeneous pattern with administration of contrast material. The MR image showed one or more bright areas interspersed with areas of low or absent signal peripherally or centrally on both T1- and T2-weighted images. The AVM was totally excised in seven patients and partially excised in one patient, with favorable results in all. The clinical management and differential diagnosis of angiographically occult AVM's are discussed. In patients with a clinical course and radiological studies suggestive of an occult AVM, removal of the lesion, if accessible, should be performed in order to rule out a neoplasm and prevent subsequent hemorrhage and progression of symptoms.

Original languageEnglish
Pages (from-to)350-355
Number of pages6
JournalJournal of Neurosurgery
Volume69
Issue number3
StatePublished - Jan 1 1988
Externally publishedYes

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Arteriovenous Malformations
Magnetic Resonance Spectroscopy
Tomography
Hemorrhage
Contrast Media
Neoplasms
Angiography
Seizures
Differential Diagnosis

ASJC Scopus subject areas

  • Clinical Neurology
  • Neuroscience(all)

Cite this

Ogilvy, C. S., Heros, R., Ojemann, R. G., & New, P. F. (1988). Angiographically occult arteriovenous malformations. Journal of Neurosurgery, 69(3), 350-355.

Angiographically occult arteriovenous malformations. / Ogilvy, C. S.; Heros, Roberto; Ojemann, R. G.; New, P. F.

In: Journal of Neurosurgery, Vol. 69, No. 3, 01.01.1988, p. 350-355.

Research output: Contribution to journalArticle

Ogilvy, CS, Heros, R, Ojemann, RG & New, PF 1988, 'Angiographically occult arteriovenous malformations', Journal of Neurosurgery, vol. 69, no. 3, pp. 350-355.
Ogilvy CS, Heros R, Ojemann RG, New PF. Angiographically occult arteriovenous malformations. Journal of Neurosurgery. 1988 Jan 1;69(3):350-355.
Ogilvy, C. S. ; Heros, Roberto ; Ojemann, R. G. ; New, P. F. / Angiographically occult arteriovenous malformations. In: Journal of Neurosurgery. 1988 ; Vol. 69, No. 3. pp. 350-355.
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