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Glioblastoma multiforme (GBM) is extremely rare in the pineal region, with only 19 previously reported cases. We report a unique case of a teenage girl with a pineal tumour with markedly raised beta-human chorionic gonadotropin (BHCG) levels, thought to be a germ-cell tumour. However, the raised BHCG was due to pregnancy, and biopsy revealed a pineal GBM.
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Nadvi et al. (2016) studied this question.
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