Primary malignant melanoma of the pineal region: illustrative case

In this case, malignant melanoma in the pineal region recurred rapidly and involved the ventricles only 4 months after surgery, suggesting the necessity of close follow-up for rare tumors. In addition, diagnosing this type of tumor on preoperative imaging is challenging, and although pathological diagnosis is the gold standard, the patient in this case required repeat pathological analysis for a definitive diagnosis to be made. https://thejns.org/doi/10.3171/CASE25242.