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Related Concept Videos

Cranial Bones: Lateral View01:27

Cranial Bones: Lateral View

The lateral view of the cranium is dominated by temporal, sphenoid, and ethmoid bones.
The temporal bone forms the lower lateral side of the skull. The temporal bone is subdivided into several regions. The flattened upper portion is the squamous portion of the temporal bone. Below this area and projecting anteriorly is the zygomatic process of the temporal bone, which forms the posterior portion of the zygomatic arch. Posteriorly is the mastoid portion of the temporal bone. Projecting...
Cranial Bones: Superior and Posterior View01:14

Cranial Bones: Superior and Posterior View

The superior view of the cranium shows the frontal and paired parietal bones.
The frontal bone is the single bone that forms the forehead. At its anterior midline, between the eyebrows, there is a slight depression called the glabella. The frontal bone also forms the supraorbital margin of the orbit. Near the middle of this margin is the supraorbital foramen, the opening that provides passage for a sensory nerve to the forehead. The frontal bone is thickened just above each supraorbital margin,...
Metastasis02:30

Metastasis

Metastasis is the spread of cancer cells from the original site to distant locations in the body. Cancer cells can spread via blood vessels (hematogenous) as well as lymph vessels in the body.
Epithelial-to-Mesenchymal Transition
The epithelial-to-mesenchymal transition or EMT is a developmental process commonly observed in wound healing, embryogenesis, and cancer metastasis. EMT is induced by transforming growth factor-beta (TGF-β) or receptor tyrosine kinase (RTK) ligands, which further...
Overview of the Skull01:08

Overview of the Skull

The cranium (skull) is the skeletal structure of the head that supports the face and protects the brain. It is subdivided into the facial bones and the brain case, or cranial vault. The facial bones underlie the facial structures, form the nasal cavity, enclose the eyeballs, and support the teeth of the upper and lower jaws.
The cranial vault surrounds and protects the brain and houses the middle and inner ear structures. This cavity is bounded superiorly by the rounded top of the skull, which...
Sutures of the Skull01:22

Sutures of the Skull

The human skull is composed of several bones that come together to protect the brain and support the structures of the face. The junctions where these bones meet are called sutures.
Sutures are immobile joints between adjacent bones of the skull. The narrow gap between the bones is filled with dense, fibrous connective tissue that unites the bones. The long sutures located between the skull bones are not straight but instead follow irregular, tightly twisting paths. These twisting lines tightly...

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Related Experiment Video

Updated: Jul 6, 2026

Role of Diffusion MRI Tractography in Endoscopic Endonasal Skull Base Surgery
09:53

Role of Diffusion MRI Tractography in Endoscopic Endonasal Skull Base Surgery

Published on: July 5, 2021

[Metastasis to the lateral skull base].

S Knipping1, C Heider, A Musil

  • 1Universitätsklinik und Poliklinik für Hals-, Nasen- und Ohrenheilkunde, Kopf - und Halschirurgie der Martin-Luther-Universität Halle-Wittenberg, Halle/Saale, Germany. stephan.knipping@medizin.uni-halle.de

HNO
|March 15, 2008
PubMed
Summary

Metastases to the lateral skull base are rare but can cause cranial nerve palsies. Early diagnosis via imaging is crucial for managing these challenging tracheal carcinoma complications.

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Last Updated: Jul 6, 2026

Role of Diffusion MRI Tractography in Endoscopic Endonasal Skull Base Surgery
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Role of Diffusion MRI Tractography in Endoscopic Endonasal Skull Base Surgery

Published on: July 5, 2021

Lateral Molar Approach-Driven Transoral Endoscopic Procedure for Benign Infratemporal Fossa Tumor Resection
04:04

Lateral Molar Approach-Driven Transoral Endoscopic Procedure for Benign Infratemporal Fossa Tumor Resection

Published on: August 15, 2025

Modelling Brain Metastasis: Standardized Analysis of Metastatic Colonization and Histological Growth Patterns by Stereotactic Intracortical Injection
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Modelling Brain Metastasis: Standardized Analysis of Metastatic Colonization and Histological Growth Patterns by Stereotactic Intracortical Injection

Published on: January 16, 2026

Area of Science:

  • Oncology
  • Neurology
  • Radiology

Background:

  • Metastases to the lateral skull base are uncommon but clinically significant due to potential cranial nerve involvement.
  • Early identification and management are critical for patient outcomes.

Observation:

  • A 69-year-old male presented with headache, facial nerve palsy, abducens nerve (VI) palsy, hearing loss, and trigeminal nerve (V3) hypesthesia.
  • Imaging revealed an intrapetrosal mass with lateral skull base destruction, suspected to be a metastasis from prior tracheal carcinoma.
  • Pathological analysis confirmed squamous cell carcinoma infiltration.

Findings:

  • Computed tomography (CT) and magnetic resonance imaging (MRI) are essential for diagnosing and planning treatment for lateral skull base metastases.
  • Metastatic disease to the lateral skull base presents a diagnostic and therapeutic challenge requiring an interdisciplinary approach.

Implications:

  • In patients presenting with headache and cranial nerve palsies, metastasis to the lateral skull base should be strongly considered in the differential diagnosis.
  • Prompt and accurate diagnosis using advanced imaging techniques is vital for effective patient management and palliative care planning.