A rare variation of the posterior cranial fossa: Duplicated falx cerebelli, occipital venous sinus, and internal occipital crest

Mohammadali Mohajel Shoja, R. S. Tubbs, A. A. Khaki, G. Shokouhi

Research output: Contribution to journalArticle

9 Scopus citations


Folds of the meningeal layer of the dura mater, the falx cerebri and tentorium cerebelli, traverse the vertebrate intracranial cavity and thus compartmentalise the brain. The falx cerebelli, another dural fold, is found in the posterior cranial fossa and attaches to the inferior aspect of the tentorium cerebelli and to the internal occipital crest. We present a case of a duplicated falx cerebella, occipital venous sinus and internal occipital crest that was detected upon routine dissection of a male cadaver. Since haemorrhage of a dural venous sinus can be a fatal complication of posterior cranial fossa surgery, knowledge of venous sinus variations in this region may prevent unpredictable complications during intracranial procedures.

Original languageEnglish (US)
Pages (from-to)171-174
Number of pages4
JournalFolia Morphologica
Issue number2
StatePublished - May 1 2006
Externally publishedYes



  • Anatomical variation
  • Duplication
  • Falx cerebelli
  • Tentorium

ASJC Scopus subject areas

  • Anatomy
  • Histology

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