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Related Concept Videos

Anatomy of the Brain: Ventricles01:18

Anatomy of the Brain: Ventricles

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. The...
Cerebrum: Anatomical Overview II01:11

Cerebrum: Anatomical Overview II

Each cerebral hemisphere can be divided into three main regions. The outermost region, the cerebral cortex, is a thin layer (2 to 4 millimeters thick) made up of gray matter, consisting of neuron cell bodies, dendrites, glial cells, and blood vessels. The middle region, or white matter, is primarily composed of myelinated nerve fibers organized into three types of large tracts: association fibers, commissures, and projection fibers. Association fibers connect different areas within the same...
Cerebrum: Anatomical Overview I01:26

Cerebrum: Anatomical Overview I

The main and largest component of the human brain is the cerebrum. The cerebrum consists of two main parts: the cerebral cortex, an outer layer with wrinkles or folds known as gyri and shallow grooves called sulci, and a deeper region beneath it. The cerebrum divides into two distinct hemispheres and contains five different lobes: the frontal, parietal, temporal, occipital, and insula. The central sulcus separates the frontal and parietal lobes and two functionally important gyri — the...
Abdominal Regions and Quadrants01:19

Abdominal Regions and Quadrants

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Related Experiment Video

Updated: May 24, 2026

Endoscopic Approach for Colloid Cyst Resection
02:30

Endoscopic Approach for Colloid Cyst Resection

Published on: May 23, 2025

Interhemispheric and quadrigeminal cysts.

Pietro Spennato1, Claudio Ruggiero, Ferdinando Aliberti

  • 1Department of Pediatric Neurosurgery, Santobono-Paulipon Pediatric Hospital, Naples, Italy.

World Neurosurgery
|March 3, 2012
PubMed
Summary
This summary is machine-generated.

Endoscopic treatment is a viable first-line option for interhemispheric and quadrigeminal cysts in infants. This approach offers comparable success rates to other arachnoid cyst treatments, despite potential complications.

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Endoscopic Approach for Colloid Cyst Resection
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Published on: January 17, 2018

Area of Science:

  • Pediatric Neurosurgery
  • Cranial Cystic Lesions
  • Minimally Invasive Surgery

Background:

  • Interhemispheric and quadrigeminal cysts are rare, often presenting in infants with other central nervous system malformations.
  • Endoscopic treatment for arachnoid cysts is gaining popularity, but data for these specific locations is limited.

Purpose of the Study:

  • To review the anatomy of interhemispheric and quadrigeminal cysts.
  • To evaluate the feasibility and outcomes of endoscopic treatment for these specific cyst types.

Main Methods:

  • Anatomical review of cyst-ventricular and cyst-cisternal relationships.
  • Literature review of endoscopic treatment for interhemispheric and quadrigeminal cysts.

Main Results:

  • These cysts exhibit varied extensions, often with continuity to the ventricular system or subarachnoid cisterns, facilitating endoscopic access.
  • Endoscopic treatment achieved success rates comparable to those reported for arachnoid cysts in other locations.

Conclusions:

  • Endoscopic treatment should be considered the primary therapeutic option for interhemispheric and quadrigeminal cysts.
  • Potential complications include subdural or subcutaneous cerebrospinal fluid collections, necessitating careful monitoring.