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Published on: May 23, 2025
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.
Abstract:
Cerebrospinal fluid (CSF) edema and porencephaly are rare postoperative complications of a ventricular shunt that result from obstruction of the distal catheter, especially in children with taut ventricles. We report a 10-year-old male with cerebellar germinoma complicated by obstructive hydrocephalus. Ventriculopuncture was performed and an Ommaya reservoir was implanted at the right frontal horn. A distal catheter was initially attached to the reservoir for drainage of hydrocephalus but was later removed. After surgery, multi-agent chemotherapy and radiation therapy, a brain MRI showed CSF edema and porencephaly in the right frontal white matter. These lesions were reduced by prompt removal of the ventricular catheter. It is important to recognize such complications and to remove the catheter as soon as possible, because the brain tissue affected by massive edema may develop irreversible changes. Advanced MRI techniques, including fluid-attenuated inversion recovery (FLAIR) and diffusion-weighted imaging may be helpful for assessing this pathological condition and its prognosis.
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