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Related Concept Videos

Cerebral Edema ll: Pathophysiology01:22

Cerebral Edema ll: Pathophysiology

Vasogenic edema is a major form of cerebral edema characterized by abnormal accumulation of fluid in the brain’s extracellular space due to disruption of the blood–brain barrier (BBB). The BBB is a specialized structure composed of endothelial cells connected by tight junctions, supported by astrocytic endfeet and a basement membrane. Under normal conditions, it tightly regulates the movement of ions, proteins, and solutes between the bloodstream and brain parenchyma. When this barrier loses...
Cerebral Edema l: Introduction01:19

Cerebral Edema l: Introduction

Cerebral edema is a pathological increase in brain water content that disrupts intracranial pressure regulation and impairs neurological function. Because the cranial vault is rigid, even modest increases in tissue volume can compromise cerebral perfusion, distort neural structures, and initiate secondary injury. Cerebral edema develops through four principal mechanisms: vasogenic, cytotoxic, interstitial, and ionic.Vasogenic EdemaVasogenic edema arises from disruption of the blood–brain...
Brain Abscess l: Introduction01:26

Brain Abscess l: Introduction

A brain abscess is a focal, intracerebral infection characterized by a localized collection of pus within the brain parenchyma, resulting from microbial invasion and the body’s inflammatory response. It progresses through stages: early and late cerebritis, followed by early and late capsule formation, reflecting tissue destruction, immune response, and eventual encapsulation.Etiology and PathogenesisCausative organisms vary with source and host factors, often involving polymicrobial infections,...
Hemorrhagic Stroke ll: Pathophysiology01:29

Hemorrhagic Stroke ll: Pathophysiology

A hemorrhagic stroke develops when a cerebral blood vessel ruptures, allowing blood to escape into the surrounding brain tissue, as in intracerebral hemorrhage (ICH), or into the subarachnoid space, as in subarachnoid hemorrhage (SAH). Because the skull is a rigid compartment, the sudden presence of extravascular blood rapidly increases intracranial pressure and compresses adjacent neural structures, leading to immediate tissue injury and impaired cerebral perfusion.Mass Effect and Primary...
Aneurysm II: Clinical Manifestations and Diagnostic Studies01:21

Aneurysm II: Clinical Manifestations and Diagnostic Studies

Thoracic, aortic arch and abdominal aneurysms are significant vascular conditions that can present with various clinical manifestations and lead to serious complications. Understanding these manifestations and the appropriate diagnostic studies is essential for effective management and treatment.Thoracic Aortic AneurysmsThoracic aortic aneurysms often remain asymptomatic until they reach a size that impinges on adjacent structures. They typically cause deep, diffuse chest pain that radiates to...

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Related Experiment Video

Updated: Jul 13, 2026

Isolation and Cannulation of Cerebral Parenchymal Arterioles
09:49

Isolation and Cannulation of Cerebral Parenchymal Arterioles

Published on: May 23, 2016

Cerebral cholesterol granuloma: case report.

Rodrigo Mendonça1, Cleiton Schweitzer Peron, Marco Antônio Stefani

  • 1Serviço de Neurocirurgia do Hospital Cristo Redentor, Porto Alegre RS, Brazil.

Arquivos De Neuro-Psiquiatria
|August 1, 2007
PubMed
Summary

Intracranial cholesterol granulomas are rare brain lesions. This case highlights an unusual intracerebral cholesterol granuloma in a young woman, successfully resected via craniotomy.

Related Experiment Videos

Last Updated: Jul 13, 2026

Isolation and Cannulation of Cerebral Parenchymal Arterioles
09:49

Isolation and Cannulation of Cerebral Parenchymal Arterioles

Published on: May 23, 2016

Area of Science:

  • Neurology
  • Neurosurgery
  • Pathology

Background:

  • Intracranial cholesterol granulomas are uncommon, typically found in the petrous apex.
  • Intracerebral cholesterol granulomas represent a rare clinical presentation.

Observation:

  • A 20-year-old female presented with a temporal mass.
  • The patient underwent craniotomy for surgical resection of the mass.

Findings:

  • Pathological examination confirmed the temporal mass to be a cholesterol granuloma.
  • This finding is unusual given the typical location of such lesions.

Implications:

  • This case expands the known spectrum of intracranial cholesterol granuloma locations.
  • Highlights the importance of considering rare pathologies in temporal lobe masses.
  • Surgical resection is an effective treatment for symptomatic intracranial cholesterol granulomas.