Now in regards to the Cerebeller Hypoplasia. The doctor who mentioned the flag pole tail being a sign of Cerebellar Hypoplasia was a regular practitioner, who we where seeing prior to working with Moki's current neurologist. It is important to note, that Cerebeller Hypoplasia is not a common condition, and regular practitioners do not treat this particular disorder very often in their careers. With that said, Cerebeller Hypoplasia comes in different degrees ranging from minor coordination and movement problems, to extreme cases, in which cats are completely paralyzed. The practitioner who mentioned the flag pole tail probably based this opinion on his own limited experience with Cerebeller Hypoplasia. I now know that this information is incorrect, but with limited information published on the condition at the time, we had to take the word of a regular practitioner until we started seeing a specialist who has advance education and training in the field of neurology. It is also important to note that since Cerebeller Hypoplasia comes in various extremes, what is true for one cat with this condition may not be true of another.
You are indeed correct in that at first the doctors said Moki had Cerebeller Hypoplasia, then they said he didn't. However without an MRI image of Moki's Cerebellum, these doctors where only guessing based on an observation of Moki. Since they couldn't actually see Moki's Cerebellum at the time, to know if it was fully developed, they had to put together the pieces of information as best they could without an actual image to view. Now that we have an actual MRI image of Moki's Cerebellum, we know for sure that it is slightly under developed. Does Moki actually have Cerebeller Hypoplasia, we don't know for sure. What we know is that Moki has a slightly under developed Cerebellum that looks a lot like what you would expect to see in a cat with Cerebeller Hypoplasia.
It's important to note the wording used by Moki's neurologist on his discharge sheet, "the MRI showed a slightly decreased cerebellar size, which may indicate evidence of degenerative or developmental disease." Notice that Moki's doctor was very careful not to give the disease an actual name. He was also very careful to state that it "may" indicate evidence. He did not say that it actually "did" indicate evidence. He then goes on to state the following, " It is most likely that Moki's problem is developmental or degenerative. However, since he has remained relatively static it is unlikely to be progressive/degenerative." Once again he carefully selects his words and says that it is "most likely...developmental or degenerative," he doesn't actually say that it is "developmental or degenerative," he then goes on to say that it is "unlikely to be progressive/degenerative," which doesn't mean that it's actually not "progressive/degenerative," just "unlikely."
In Moki's particular case their is no black or white, everything appears to be a shade of gray. It's kind of hard to explain, but what Moki's neurologist is saying is that based on their findings, Moki's condition appears to be like those seen in cats with Cerebeller Hypoplasia, who developed the virus as a result of their mothers having Panlukopenia at the time of their conception. He's not saying that it actually was/is a result of this. Therefore everything that follows is either "likely," or "unlikely" based on what they currently know about Cerebeller Hypoplasia, and Moki's current state. So in other words they cannot give us a definite answer at this time. What they can tell us is that right now Moki's orthopedic condition is of bigger concern than his current neurological condition. We know that Moki's orthopedic condition is bad, and at the moment his neurological condition appears to be stable, so they want to set aside the neurological condition for the time being, and focus on the orthopedic problem, then if need be and things change, we can come back to the neurological condition sometime in the future. I hope that all makes sense...