The outcome of this surgery is that the hindbrain and brainstem should have more room and the fluid around the brain and spinal cord should be able to flow back and forth freely.
Rosie recovered remarkably quickly from this major surgery and after a few months her medication (Gabapentin) was reduced to 100mg each evening. There are as yet inconclusive findings about the long term results of decompression surgery so we will work with Dr Rusbridge to monitor Rosie's post surgical progress. I think she has headaches and some level of discomfort, particulary in the evenings, but she can't tell me so I don't really know.
Post-surgery MRI and cancer
I arranged to have a post surgical MRI scan at the Stone Lion Veterinary Centre in October 2007. Just before that I noticed a small lump near one of Rosie's mammary glands. Lab
tests were inconclusive but it was recommended that the lump be removed. So while Rosie was under the anaesthetic for the MRI the tumour was removed. Further laboratory tests found that the lump was a carcinoma. Cancer at five years old and something else to worry about!
The good news, however, was that the post surgical MRI showed that the decompression surgery had been a success. Rosie's hindbrain was no longer compressed and the cerebrospinal fluid (CSF) pathways were clear. The small cervical syrinx remained but had not progressed.
Is this the end of Rosie's Syringmyelia story? I wish it was. In so many ways Rosie is a very normal little dog and has a good quality of life. She exercises a lot, chases leaves and butterflies, has chased, killed and eaten a rabbit or two(!!), assisted by our cat, Freddy. She loves life and of course is spoilt rotten. However, there are some signs which will not go away.
Rosie rubs her face and head probably a few times a day. Sometimes I think she 'hides' behind a chair or under the table and every evening and sometimes during the day as well, she goes to a chair and 'digs' frantically at it. I don't know why she does this but it is puzzling and at the back of my mind is the thought that these behaviours are a response to some pain or unpleasant sensations.
Three years post surgery in March 2009 we trekked to Wimbledon again for what I hoped would be Rosie's last MRI. For once I was optimistic, but sadly this time the news was not good - there had been some progression of Syringomyelia. The syrinx had not lengthened but it had expanded from 1.5mm in width to 3.5mm. What can I say? The future is not quite so 'rosy' now, but we have some new medicine to try (Cimetidine) which should reduce the production of cerebrospinal fluid (CSF), relieve the pressure and hopefully slow down any further progression of SM.
Rosie doesn't seem to be in any pain, but I'm reminded of the fact that dogs are very stoical animals. They will put up with chronic pain and still be positive and cheerful. I do so wish she could tell me.
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