Pediatrics Which of the following most likely causes a communicating (nonobstructive) hydrocephalus? A Tuberculous meningitis B Stenosis of the duct of Sylvius C Ependymoma of the fouh ventricle D Blockage of the arachnoid granulations 💡 Explanation Which of the following most likely causes a communicating (nonobstructive) hydrocephalus? ✓ Correct Answer: D. Blockage of the arachnoid granulations