Anat Cell Biol.  2019 Sep;52(3):337-339. 10.5115/acb.19.017.

Partial duplication of tentorium cerebelli and complete duplication of falx cerebelli

• Nayak SB
• Shetty SD

• KMID: 2459550
• DOI: http://doi.org/10.5115/acb.19.017

Abstract

Variations of the dural folds and the dural venous sinuses are infrequently reported in the existing medical literature. Such variations in the posterior cranial fossa may pose difficulties in various analytical and surgical procedures of this region. We present a rare concurrent variation of the falx cerebelli and tentorium cerebelli that was detected during routine dissection of an adult male cadaver. While removing the brain, a partial duplication of tentorium cerebelli was observed below the left half of the tentorium cerebelli and above the left cerebellar hemisphere. This fold did not have any dural venous sinus in it. Further, a complete duplication of falx cerebelli with a single occipital venous sinus within its attached border was also observed. We present the review of literature and discuss the comparative anatomy of this case.

Keyword

Dura; Falx cerebelli; Tentorium cerebelli; Meninges; Variation

MeSH Terms

Adult
Anatomy, Comparative
Brain
Cadaver
Cranial Fossa, Posterior
Dura Mater*
Humans
Male
Meninges
Spinal Cord*

Figure

• 

  Fig. 1 Cranial cavity showing complete duplication of falx cerebelli and partial duplication of tentorium cerebelli. ACF, anterior cranial fossa; ATC, accessory tentorium cerebelli; FC, falx cerebri; FC1 and FC2, duplicated falx cerbelli; FM, foramen magnum; MCF, middle cranial fossa; PT, petrous temporal; TC, tentorium cerebelli (reflected backwards).

• 

  Fig. 2 Closer view of posterior cranial fossa showing complete duplication of falx cerebelli and partial duplication of tentorium cerebelli. ATC, accessory tentorium cerebelli; FC1 and FC2, duplicated falx cerbelli; PT, petrous temporal; TC, tentorium cerebelli (reflected backwards).

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