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Related Concept Videos

Increased Intracranial Pressure l: Introduction01:14

Increased Intracranial Pressure l: Introduction

Intracranial hypertension is a sustained elevation of intracranial pressure (ICP) above 22 mm Hg. In supine adults, normal ICP is ~7–15 mm Hg.The rigid, nonexpandable cranium contains three components—brain tissue, blood, and cerebrospinal fluid (CSF)—that total ~1,700 mL in a typical adult: 1,400 mL brain (~80%), 150 mL blood (~10%), and 150 mL CSF (~10%). According to the Monro–Kellie doctrine, total intracranial volume is effectively fixed. When one component expands, CSF and venous blood...
Increased Intracranial Pressure ll: Pathophysiology01:29

Increased Intracranial Pressure ll: Pathophysiology

Increased intracranial pressure (ICP) refers to a potentially life-threatening rise in pressure inside the skull. This usually happens when there is a major change in the volume of brain tissue, blood, or cerebrospinal fluid (CSF) — the three components inside the skull. According to the Monro-Kellie doctrine, if the volume of one component increases, the volumes of the other components must decrease to maintain normal pressure. If this does not happen, ICP rises.The process often begins with...
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,...

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Related Experiment Video

Updated: Jul 3, 2026

Endoscopic Endonasal Trans-sphenoidal Approach: Minimally Invasive Surgery for Pituitary Adenomas
07:43

Endoscopic Endonasal Trans-sphenoidal Approach: Minimally Invasive Surgery for Pituitary Adenomas

Published on: January 17, 2018

[Sinus pericranii. A case report].

A Guillén-Quesada1, M Alamar-Abril, G García-Fructuoso

  • 1Servicio de Neurocirugía Pediátrica, Hospital Sant Joan de Déu, 08950 Esplugues de Llobregat, España. aguillen@hsjdbcn.org

Revista De Neurologia
|July 16, 2008
PubMed
Summary
This summary is machine-generated.

Sinus pericranii is a rare vascular anomaly connecting intracranial and extracranial circulation. This case report details a typical presentation in an infant, highlighting diagnostic and treatment approaches for this pediatric condition.

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Last Updated: Jul 3, 2026

Endoscopic Endonasal Trans-sphenoidal Approach: Minimally Invasive Surgery for Pituitary Adenomas
07:43

Endoscopic Endonasal Trans-sphenoidal Approach: Minimally Invasive Surgery for Pituitary Adenomas

Published on: January 17, 2018

Area of Science:

  • Vascular Surgery
  • Pediatric Radiology
  • Neurology

Background:

  • Sinus pericranii is a rare vascular anomaly characterized by abnormal communication between intracranial and extracranial circulatory systems.
  • It involves a connection between diploic/epicranial veins and a dural sinus.

Observation:

  • Presents a case of sinus pericranii in an 8-month-old boy.
  • The child exhibited typical clinical and radiological manifestations of the condition.

Findings:

  • Sinus pericranii is uncommon in pediatric pathology.
  • Typically asymptomatic and often located near the anterior fontanelle.
  • Magnetic resonance imaging (MRI) with contrast is the primary diagnostic tool.

Implications:

  • Early diagnosis and appropriate management are crucial for pediatric patients.
  • Surgical intervention is the standard treatment, though spontaneous thrombosis is a rare possibility.
  • Understanding this anomaly aids in managing potential complications and ensuring optimal outcomes.