Hi, my 1 year old son had a craniotomy and brain decompression surgery in March for a Chiari 1 malformation. He has been having bad headaches and can not sleep through the night since the surgery, he vomited every night for the first 2 1/2 weeks after the surgery also had fevers of 102 and RSV since the surgery. He had a regular MRI on april 1st that showed he has communicating hydrocephalus with 14mm. He had this past Friday had an MRI with contrast and the neurosurgeon called with the results last night. He said that the ventricles are still 14mm but he doesn't think he has hydrocephalus that he thinks he has a prominent ventricular system. What does that mean? and he said where they did the surgery still looks decompressed the fluid is flowing well there. Do you think I should seek a second opinion?