Hi, everyone:
I had my 17-month followup MRI and audiogram at Stanford last week. Good news: my AN has shrunk another 4 mm along the oblique-transverse axis. It now measures 17 mm along that plane and is no longer pressing against and indenting my brainstem!
The other two dimensions are essentially unchanged -- i.e., within the 2mm error of margin for MRI.
My hypoglossal schwannoma, which has not been treated, has not changed in size. I'll stay in W&W on that one.
Interestingly, my AN still shows prominent dark blotches, normally associated with necrosis. Dr. Chang didn't put much stock in it being necrosis, however, at 17 months post-CK. He explained that if the MRI had been taken with less time for the contrasting agent to absorb into the tumor (like marinating meat), some areas that didn't absorb the agent would remain dark. However, I remember remarking to the MRI technician that he was taking longer than usual to finish injecting me with the contrasting agent (gadolineum); I was concerned he had missed my vein. The technician replied that he likes to wait longer than the other technicians before doing the MRI with contrast, to allow time for the agent to be absorbed by the tumor. I am certain he took longer than the other technicians, if only by an extra 30-60 seconds. It's my uneducated opinion that the dark blotches are probably necrosis and that the high doses of systemic enzymes I've been taking post-CK (to shrink the tumor) have slowed the formation of scar tissue and kept the tumor soft (scar tissue shows up white in MRIs taken with contrast). This is my wild guess; I have no way of knowing if it's true, and Dr. Chang certainly knows a lot more about this than me. It makes me happy to think that it's persistent necrosis, though.
My audiogram showed a 5dB improvement in hearing in bass frequencies and no further hearing loss in the highs. 5 dB is not considered conclusive, when one considers error margins caused by equipment, acoustical conditions and the technician. But comparing my current results to those obtained from audiograms taken at Stanford 6 and 12 months ago, my hearing in bass frequencies has improved 15 to 20 dB in the bass range over the past year. That's clearly significant.
I do not need another followup for another year. Yaaaayyyy!!!
Needless to say, I'm thrilled.
Best wishes to all,
TW