Spinal intramedullary arachnoid cyst in children

Mohamed Lmejjati1, Khalid Aniba, Mustapha Haddi

  • 1Department of Neurosurgery, CHU Mohammed-VI, Marrakesh, Morocco. otalmejjati@yahoo.fr

Pediatric Neurosurgery
|March 21, 2008
PubMed

Insights

This case study highlights a rare pediatric spinal arachnoid cyst causing paraparesis. Surgical removal led to a full neurological recovery, underscoring the importance of considering this diagnosis.

Area of Science:

  • Pediatric Neurology
  • Neurosurgery
  • Spinal Imaging

Background:

  • Intramedullary cystic lesions in children are rare and can present with diverse neurological deficits.
  • Spinal magnetic resonance imaging (MRI) is crucial for diagnosing such lesions.
  • Arachnoid cysts are typically found in the subarachnoid space but can occur within the spinal cord parenchyma.

Observation:

  • A pediatric patient presented with progressive paraparesis over 15 days.
  • Spine MRI revealed an intramedullary cystic lesion extending from T(3) to T(4).
  • Surgical intervention involved a T(3)-T(4) laminotomy for lesion removal.

Findings:

  • Histopathological examination confirmed the lesion as an arachnoid cyst.
  • Post-operative neurological status significantly improved.
  • Follow-up at 4 months showed complete normalization of neurological examinations.

Implications:

  • This case emphasizes that spinal arachnoid cysts should be considered in the differential diagnosis of pediatric intramedullary cystic lesions.
  • Early diagnosis and surgical management can lead to favorable outcomes.
  • Further research into the etiology and optimal management of pediatric intramedullary arachnoid cysts is warranted.

Related Concept Videos

Cranial and Spinal Meninges01:19

Cranial and Spinal Meninges

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).
Cranial Meninges
These meningeal layers cover the cranium. The dura mater is the outermost layer of cranial meninges. It is a thick and durable membrane of dense...
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...
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,...
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...
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...
Cerebrospinal Fluid01:21

Cerebrospinal Fluid

Cerebrospinal fluid (CSF) is a colorless liquid that flows around the brain and the spinal cord, playing a vital role in the protection, support, and overall function of the central nervous system (CNS). CSF production, circulation, and absorption are tightly regulated processes essential for the brain and spinal cord to function properly.
CSF Production
CSF is produced mainly in the choroid plexus, a network of capillaries and ependymal cells located within the ventricular system of the brain.