Patient: On August 2, 2011, he developed tinnitus in his right ear and had MRI enhancement and wave spectrum analysis at Wuhan Union Hospital, where he was diagnosed with: 1, tetrasplenomegaly with low-grade glioma and hydrocephalus; 2, interstitial cerebral edema We had already had a shunt done at Wuhan Union Hospital on September 13, 2011, as recommended by the doctor, and recovered well. This year (2012), she had two headaches, each time she cried out in the morning that her forehead area hurt. I thought it was a cold, so I told her to drink some cold punch and she was fine. Last time (April 3), the doctor at our local hospital pressed the regulator pump a few times and said he was afraid that the tube was blocked, but the CT results showed that the shunt was working well. On April 10, 2012, the child developed headache, coma, and severe convulsions, which were diagnosed to be caused by a blocked drainage tube. The MRI suggested that the interstitial cerebral edema was aggravated. Then another left ventricular shunt was performed in Wuhan Union Hospital, and the previous shunt was tied up by the doctor from the abdominal end. 1. On September 13, 2011, the shunt was done at Wuhan Union Hospital as recommended by the doctor, and the recovery was good. However, on April 10, 2012, the child developed headache, coma and severe convulsions, and then underwent a left ventricular shunt at Wuhan Union Medical College Hospital, and the previous shunt was tied up from the abdominal end. Is it proper to tie up the shunt from the abdominal end? What is the effect of the cerebrospinal fluid left in the shunt on the brain after a long period of time; 2.