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Anterior medullary vein

Dr Joachim Feger et al.

The anterior medullary vein (AMV) is a vein of the brain stem that can be seen in a number of individuals. It connects the anterior spinal vein to the pontomesencephalic venous system and to several adjacent dural sinuses via bridging veins.

The anterior medullary vein usually courses in a midline position along the anterior border of the medulla in the anterior medullary sulcus and the inferior pons 1,2. At the pontomedullary junction level, it features different variations in course and communication with the anterior pontomesencephalic vein or the transverse pontine vein 2. Inferiorly it connects with the anterior spinal vein 2.

Variations at the pontomedullary junction level include single, double, triple or absent anterior medullary veins with midline and/or superolateral course 2.  

The anterior medullary vein might be involved in the drainage of dural arteriovenous fistulas or brainstem arteriovenous malformations (AVMs) of the anterior medullary subtype 2,3.

Anatomy: Brain

Anatomy: Brain

Article information

rID: 90460
Section: Anatomy
Tag: cases
Synonyms or Alternate Spellings:
  • Anterior medullary venous system
  • Median anterior medullary vein
  • Anterior medullary vein (AMV)

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