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Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
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Upstream and downstream hydrocephalus is seen in
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The correct answer is  Most Brain tumors usually produce only upstream hydrocephalus. Choroid plexus papilloma is a CSF producing tumor located in occipital horns of lateral ventricle and produces both upstream and downstream hydrocephalus. CECT axial image showing intensely enhancing lesion in occipital horn of left lateral ventricle s/o Choroid plexus papilloma.