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Related Concept Videos

Cranial and Spinal Meninges01:19

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The cranial and spinal meninges are complex protective structures surrounding the central nervous system (CNS), consisting of the brain and spinal cord. These meninges consist of the dura mater, the arachnoid mater, and the pia mater. They protect the CNS, provide structural support, and aid in circulating cerebrospinal fluid (CSF).
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The lateral view of the cranium is dominated by temporal, sphenoid, and ethmoid bones.
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There are hollow fluid-filled cavities known as ventricles deep inside the human brain. There are two lateral ventricles, one in each cerebral hemisphere, and each has three different projections — the anterior, inferior, and posterior horns visible from the lateral side. A thin membrane called the septum pellucidum separates the two lateral ventricles. The slender third ventricle in the diencephalon is connected to each lateral ventricle via a channel called the interventricular foramen.
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Cranial Bones: Superior and Posterior View01:14

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The superior view of the cranium shows the frontal and paired parietal bones.
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Related Experiment Video

Updated: Dec 17, 2025

Lateral Molar Approach-Driven Transoral Endoscopic Procedure for Benign Infratemporal Fossa Tumor Resection
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Middle fossa meningiomas.

Stephen T Magill1, Michael E Sughrue2, Luis R Rodriguez1

  • 1Department of Neurological Surgery, University of California San Francisco, San Francisco, CA, United States.

Handbook of Clinical Neurology
|June 27, 2020
PubMed
Summary
This summary is machine-generated.

Middle fossa meningiomas, tumors arising from the dura, are uncommon and often present at a large size. Surgical treatment requires special considerations due to their location and typical presentation.

Keywords:
MeningiomaMiddle fossa

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Area of Science:

  • Neurosurgery
  • Neuroanatomy

Background:

  • The middle cranial fossa is a complex anatomical region.
  • Meningiomas can arise from the dura mater within this fossa.

Purpose of the Study:

  • To describe the anatomical boundaries of the middle cranial fossa.
  • To discuss the characteristics and surgical considerations of middle fossa meningiomas.

Main Methods:

  • Anatomical description of the middle cranial fossa.
  • Review of clinical presentation and surgical management of middle fossa meningiomas.

Main Results:

  • Middle fossa meningiomas are defined by >75% attachment to the fossa floor.
  • These tumors typically present at a large size.

Conclusions:

  • Middle fossa meningiomas are uncommon tumors.
  • Their large size at presentation necessitates specialized surgical approaches.