Case illustrates resection of an intraventricular neurocytoma improving symptoms of Kleine-Levin syndrome, suggesting implications for similar neurosurgical conditions.
Compression by an intraventricular mass on the septal area, diencephalon, and hypothalamus may induce secondary KLS (sKLS). Tumor removal can relieve the syndrome. Hypersexualty and sKLS were reported more frequently with neurosurgical diseases of the right hemisphere, but the number of cases reported is insufficient to reach a conclusion and further observations are needed. https://thejns.org/doi/10.3171/CASE25800.
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Scravaglieri et al. (2026) studied this question.
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