Factors determining hydrocephalus after decompressive craniectomy: the role of interhemispheric hygroma

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Post-traumatic hydrocephalus is a complication following decompressive craniectomy in patients with traumatic brain injury.
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Interhemispheric hygroma thickness is independently associated with the development of hydrocephalus after decompressive craniectomy.
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In a study of 104 patients, 50% developed radiological hydrocephalus, with significant differences in follow-up duration.
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A threshold of approximately 8 mm of hygroma thickness showed high sensitivity for predicting treatment requirement for hydrocephalus.
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The study suggests that interhemispheric hygroma thickness may serve as a useful radiological parameter for postoperative monitoring.

Frontiers In Neurology

by Andreea-Emanuela Baciu, Ana-M. Castaño León, Sofía Martínez Molina, Alfonso Lagares
June 22, 2026

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