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Craniopharyngiomas are the most commonly presented nonglial tumors in child patients. They cause significant morbidity and mortality, both before and after surgery. The most common immediate postsurgery complications are attributable to pituitary insufficiency. Neurovascular complications account for only 2.7 to 2.9% surgical cases, and usually involve the vessels of the Circle of Willis. Thrombosis or vasospasm of the vessels of posterior circulation is unheard of. Here, we are reporting a unique case of a child with craniopharyngioma who developed acute spontaneous basilar artery thrombosis and posterior circulation stroke 6 days after surgery. [ABSTRACT FROM AUTHOR]