The venous circle of trolard

Tubbs R. Shane, M. Loukas, M. M. Shoja, E. G. Salter, W. J. Oakes

Research output: Contribution to journalArticlepeer-review

4 Scopus citations


A venous anastomotic network is occasionally found at the base of the brain, which closely resembles the vicinal arterial circle of Willis. When present, this venous polygon is composed of the anterior cerebral and communicating veins, the basal vein of Rosenthal and the posterior communicating and lateral mesencephalic veins. We propose that this anastomotic ring be termed the venous circle of Trolard. This venous circle might cause bleeding with such procedures as an endoscopic third ventriculostomy. We believe that information regarding this venous circle may be useful to neuroradiologists or neurosurgeons operating at the base of the brain (Fig. 1, Ref. 10).

Original languageEnglish (US)
Pages (from-to)180-181
Number of pages2
JournalBratislava Medical Journal
Issue number4
StatePublished - 2008
Externally publishedYes


  • Anastomosis
  • Brain
  • Communicating vein
  • Intracranial
  • Venous circle

ASJC Scopus subject areas

  • General Medicine


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