So unfortunately I have some news. It appears that Ethan has developed a hole in the membrane surrounding his spinal cord and he is leaking spinal fluid. The hole is most likely at the surgery site. It is not life threatening and he is not in pain. But he does have a cyst the size of a clementine where his surgery scar is.
He is getting an MRI next week to measure the extent of the issue. If the hole is too big, which appears to be the case, they will have to do a follow-up surgery. Ugh! If it is small enough, it may resolve itself, but given that it just keeps getting bigger, I am not too optimistic.