Posterior foss avenous angiomas with drainage through the brain stem

Journal Article · Fri Apr 01 00:00:00 EST 1994 · AJNR. American Journal of Neuroradiology; (United States)

OSTI ID:6553147

Damiano, T R; Truwit, C L ^[1]; Dowd, C F ^[2]; Symonds, D L ^[3]

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1. Fitzsimons Army Medical Center, Aurora, CO (United States)
2. Univ. of California, San Francisco, CA (United States)
3. Denver General Hospital, CO (United States)

To describe 11 cases of posterior fossa venous angiomas with drainage through the brain stem. Eleven cases of posterior fossa venous angioma with drainage through the brain stem were evaluated using MR. Correlation with known routes of venous drainage for the cerebellum and brain stem is made. Six of the 11 venous angiomas were found in the cerebellum, four in the brain stem; one involved both the cerebellum and brain stem. The cerebellar venous angiomas drained to subependymal veins about the fourth ventricle and dorsal pons. These then connected with an enlarged transmesencephalic or transpontine vein, to drain anteriorly to the anterior pontine veins. The brain stem angiomas had variable drainage depending on location. Evidence of hemorrhage was seen in five cases. Cerebellar and brain stem venous angiomas have several potential routes of drainage, including an enlarged vein traversing the pons, midbrain, or medulla. A knowledge of the normal venous anatomy of this region helps to understand the occurrence of these uncommon routes of venous drainage. 15 refs., 8 figs., 1 tab.

• OSTI ID: 6553147
• Journal Information: AJNR. American Journal of Neuroradiology; (United States), Vol. 15:4; ISSN 0195-6108
• Country of Publication: United States
• Language: English

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62 RADIOLOGY AND NUCLEAR MEDICINE
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ANGIOMAS
BLOOD VESSELS
DRAINAGE
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MAGNETIC RESONANCE
VEINS
ANATOMY
CEREBELLUM
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CARCINOMAS
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ORGANS
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