This is not posterior fossa mutism and for brevity's sake I didn't include many of the details before. I appreciate the interest. His course has been complicated by TV/Sigmoid sinus thrombus & leg DVT treated with IVC filter & ultimately heparin gtt also complicated by elevated ICPs & requiring re-intubation, CT-hydrocephalus & posterior fossa edema requiring conversion of craniotomy to craniectomy. MRI 3 weeks after original operation showed ventriculitis & resection cavity abscess taken for washout, he also developed new onset Afib and bleeding ulcers eventually controlled by GI. He failed multiple EVD's and ultimately had VP shunt placed. Currently with large decubitus ulcer requiring regular debridement and ongoing intermittent fevers. Currently not alert and trached (off vent). KPS is probably in the 10-20 range and I kept delaying the question on path (WNT, SHH) to when I thought there was some chance he would improve, but those results are currently pending.