Dad was admitted to HUP yesterday evening. He and Mom initially went in to Abington because he was experiencing weakness and loss of sensation in his leg. They took an emergency MRI at Abington before the decision was made to transfer him down to HUP via ambulance. It does appear that this is the result of the tumor's pressure on the spine, though it could well have to do with the radiation on that area itself. We can only pray that the tumor will begin to respond the radiation by shrinking, and that any nerve damage would be temporary. Thanks to everyone for persevering with Dad in this. More later.