Duplication of falx cerebelli, occipital sinus, and internal occipital crest.

Sujatha D'Costa, A. Krishnamurthy, S. R. Nayak, Sampath Madhyasta, Latha V. Prabhu, Jiji P. J, Anu V. Ranade, Mangala M. Pai, Rajanigandha Vadgaonkar, C. Ganesh Kumar, Rajalakshmi Rai

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

The incidence of variations of falx cerebelli was studied in 52 adult cadavers of south Indian origin, at Kasturba Medical College Mangalore, after removal of calvaria. In eight (15.4%) cases, we observed duplicated falx cerebelli along with duplicated occipital sinus and internal occipital crest. The length and the distance between each of the falces were measured. The mean length of the right falces cerebelli was 38 mm and the left was 41 mm. The mean distance between these two falces was 20 mm. No marginal sinus was detected. Each of the falces cerebelli had distinct base and apex and possessed a distinct occipital venous sinus on each attached border. These sinuses were noted to drain into the left and right transverse sinus respectively. After detaching the dura mater from inner bony surface of the occipital bone, it was noted that there were two distinct internal occipital crests arising and diverging inferiorly near the posterolateral borders of foramen magnum. The brain from these cadavers appeared grossly normal with no defect of the vermis. Neurosurgeons and neuroradiologists should be aware of such variations, as these could be potential sources of hemorrhage during suboccipital approaches or may lead to erroneous interpretations of imaging of the posterior cranial fossa.

Original languageEnglish
Pages (from-to)107-110
Number of pages4
JournalRomanian journal of morphology and embryology = Revue roumaine de morphologie et embryologie
Volume50
Issue number1
Publication statusPublished - 2008

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Dura Mater
Cadaver
Occipital Bone
Transverse Sinuses
Foramen Magnum
Posterior Cranial Fossa
Skull
Hemorrhage
Incidence
Brain

All Science Journal Classification (ASJC) codes

  • Pathology and Forensic Medicine
  • Embryology
  • Developmental Biology
  • Cell Biology

Cite this

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title = "Duplication of falx cerebelli, occipital sinus, and internal occipital crest.",
abstract = "The incidence of variations of falx cerebelli was studied in 52 adult cadavers of south Indian origin, at Kasturba Medical College Mangalore, after removal of calvaria. In eight (15.4{\%}) cases, we observed duplicated falx cerebelli along with duplicated occipital sinus and internal occipital crest. The length and the distance between each of the falces were measured. The mean length of the right falces cerebelli was 38 mm and the left was 41 mm. The mean distance between these two falces was 20 mm. No marginal sinus was detected. Each of the falces cerebelli had distinct base and apex and possessed a distinct occipital venous sinus on each attached border. These sinuses were noted to drain into the left and right transverse sinus respectively. After detaching the dura mater from inner bony surface of the occipital bone, it was noted that there were two distinct internal occipital crests arising and diverging inferiorly near the posterolateral borders of foramen magnum. The brain from these cadavers appeared grossly normal with no defect of the vermis. Neurosurgeons and neuroradiologists should be aware of such variations, as these could be potential sources of hemorrhage during suboccipital approaches or may lead to erroneous interpretations of imaging of the posterior cranial fossa.",
author = "Sujatha D'Costa and A. Krishnamurthy and Nayak, {S. R.} and Sampath Madhyasta and Prabhu, {Latha V.} and J, {Jiji P.} and Ranade, {Anu V.} and Pai, {Mangala M.} and Rajanigandha Vadgaonkar and {Ganesh Kumar}, C. and Rajalakshmi Rai",
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T1 - Duplication of falx cerebelli, occipital sinus, and internal occipital crest.

AU - D'Costa, Sujatha

AU - Krishnamurthy, A.

AU - Nayak, S. R.

AU - Madhyasta, Sampath

AU - Prabhu, Latha V.

AU - J, Jiji P.

AU - Ranade, Anu V.

AU - Pai, Mangala M.

AU - Vadgaonkar, Rajanigandha

AU - Ganesh Kumar, C.

AU - Rai, Rajalakshmi

PY - 2008

Y1 - 2008

N2 - The incidence of variations of falx cerebelli was studied in 52 adult cadavers of south Indian origin, at Kasturba Medical College Mangalore, after removal of calvaria. In eight (15.4%) cases, we observed duplicated falx cerebelli along with duplicated occipital sinus and internal occipital crest. The length and the distance between each of the falces were measured. The mean length of the right falces cerebelli was 38 mm and the left was 41 mm. The mean distance between these two falces was 20 mm. No marginal sinus was detected. Each of the falces cerebelli had distinct base and apex and possessed a distinct occipital venous sinus on each attached border. These sinuses were noted to drain into the left and right transverse sinus respectively. After detaching the dura mater from inner bony surface of the occipital bone, it was noted that there were two distinct internal occipital crests arising and diverging inferiorly near the posterolateral borders of foramen magnum. The brain from these cadavers appeared grossly normal with no defect of the vermis. Neurosurgeons and neuroradiologists should be aware of such variations, as these could be potential sources of hemorrhage during suboccipital approaches or may lead to erroneous interpretations of imaging of the posterior cranial fossa.

AB - The incidence of variations of falx cerebelli was studied in 52 adult cadavers of south Indian origin, at Kasturba Medical College Mangalore, after removal of calvaria. In eight (15.4%) cases, we observed duplicated falx cerebelli along with duplicated occipital sinus and internal occipital crest. The length and the distance between each of the falces were measured. The mean length of the right falces cerebelli was 38 mm and the left was 41 mm. The mean distance between these two falces was 20 mm. No marginal sinus was detected. Each of the falces cerebelli had distinct base and apex and possessed a distinct occipital venous sinus on each attached border. These sinuses were noted to drain into the left and right transverse sinus respectively. After detaching the dura mater from inner bony surface of the occipital bone, it was noted that there were two distinct internal occipital crests arising and diverging inferiorly near the posterolateral borders of foramen magnum. The brain from these cadavers appeared grossly normal with no defect of the vermis. Neurosurgeons and neuroradiologists should be aware of such variations, as these could be potential sources of hemorrhage during suboccipital approaches or may lead to erroneous interpretations of imaging of the posterior cranial fossa.

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