ArticleSurgical neurology international2026
Incidental meningiomatous component within an intraventricular metastasis: A rare intraventricular collision tumor.
Article in Surgical neurology international, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Background: Intraventricular cerebral metastases are rare. Collision tumors comprising metastatic carcinoma with a meningiomatous component are exceptional, particularly within the ventricular system. Case Description: A 79-year-old female with a history of endometrial serous carcinoma presented with progressive cognitive decline and gait instability. Magnetic resonance imaging demonstrated a large left occipital mass with intraventricular extension and surrounding edema. She underwent resection. Histopathology showed a papillary tumor consistent with metastatic high-grade serous carcinoma, and within the specimen, a discrete meningiomatous focus was identified, compatible with a collision tumor. Postoperatively, she recovered without new deficits. Conclusion: This case highlights an uncommon intraventricular collision tumor formed by metastatic high-grade serous carcinoma and an incidental meningiomatous component, underscoring the importance of thorough sampling and immunohistochemistry for ventricular masses in oncologic patients.
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