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Updated: Oct 1, 2026

Neuronavigation and Laparoscopy Guided Ventriculoperitoneal Shunt Insertion for the Treatment of Hydrocephalus
Published on: October 14, 2022
A rare case of shunt malfunction attributable to blockage of a Codman-Hakim programmable shunt valve
Kunikazu Kurosaki1, Hideo Hamada, Nakamasa Hayashi
1Department of Neurosurgery, Toyama Medical and Pharmaceutical University, 2630, Sugitani, Toyama 930-0194, Japan.
Background:
We report a rare case of shunt malfunction resulting from blockage of a Codman-Hakim programmable shunt valve by fibrinoid-like tissues.
History:
The patient had undergone shunt system placement for hydrocephalus after hemorrhagic infarction at the age of 8 months; a Codman-Hakim programmable shunt valve was used at that time.
Later Course:
Two years after shunt placement, the boy suffered from irritability and poor activity when the aforementioned shunt malfunction arose following valve blockage by fibrinoid-like tissues. He underwent shunt revision and was subsequently free of symptoms.