Reversible cerebrospinal fluid edema and porencephalic cyst, a rare complication of ventricular catheter

Michio Ozeki1, Michinori Funato, Takahide Teramoto

  • 1Department of Pediatrics, Graduate School of Medicine, Gifu University, Yanagido 1-1, Gifu 501-1194, Japan. mi_ti_ti_1227@yahoo.co.jp <mi_ti_ti_1227@yahoo.co.jp>

Insights

Cerebrospinal fluid (CSF) edema and porencephaly are rare complications of ventricular shunts. Prompt removal of the shunt catheter can reduce these lesions and prevent irreversible brain changes.

Area of Science:

  • Neuroscience
  • Pediatric Neurosurgery
  • Radiology

Background:

  • Obstructive hydrocephalus in children can necessitate ventricular shunt placement.
  • Cerebellar germinoma is a pediatric brain tumor that can lead to obstructive hydrocephalus.

Observation:

  • A 10-year-old male with cerebellar germinoma developed obstructive hydrocephalus requiring an Ommaya reservoir with a distal catheter.
  • Post-chemotherapy and radiation, MRI revealed cerebrospinal fluid (CSF) edema and porencephaly in the right frontal white matter.
  • These lesions correlated with the presence of the distal ventricular catheter.

Findings:

  • Cerebrospinal fluid (CSF) edema and porencephaly are rare but serious postoperative complications of ventricular shunts, particularly with distal catheter obstruction.
  • Prompt removal of the ventricular catheter led to a reduction in the observed CSF edema and porencephaly.
  • Advanced MRI techniques like FLAIR and diffusion-weighted imaging can aid in assessing these complications.

Implications:

  • Early recognition and removal of ventricular catheters are crucial to prevent irreversible brain tissue damage from edema.
  • This case highlights the importance of vigilant monitoring for shunt complications in pediatric neuro-oncology patients.
  • Understanding these rare complications can improve management strategies for hydrocephalus in children.

Related Concept Videos

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...
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...
Cytotoxic Edema: Pathophysiology01:21

Cytotoxic Edema: Pathophysiology

Cytotoxic edema is a form of cerebral edema characterized by intracellular swelling of neurons, astrocytes, and other glial cells. It develops when the mechanisms responsible for maintaining ionic gradients across the cell membrane become impaired. Under normal physiological conditions, the sodium–potassium ATPase actively transports sodium ions out of the cell and potassium ions into the cell, preserving osmotic balance and enabling electrical signaling. This pump requires a continuous supply...
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 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...