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Physiology & Medicine / Thyroid panel-what do these test results mean?

« on: 10/08/2007 20:10:42 »

  I had a thyroid test which showed an abnormal level of free T4.
  The TSH was normal: 2.73, ref range: 0.42-5.47 uIU/ml
  Free T4 was high:   2.63, ref range: 0.59-1.17 ng/dl
An article on a physician's web page said that a high free t4 with a normal TSH rules out both hypothyroidism and hyperthyroidism. Does the high level of free t4 on my test indicate anything? I have no history of thyroid problems  nor many  symptoms of hyper or hypothyroidism. Is this test result something to cause concern and of what?

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Physiology & Medicine / Newly diagnosed arachnoid cyst-B12 connection?

« on: 25/04/2007 05:17:26 »

  Today I got results of an MRI which indicates an arachnoid cyst in my right hemisphere. Several years ago an MRI showed a cyst in the center of my spinal cord [syringohydromyelia]. After learning that B12 deficiency can lead to spinal cord degeneration. I began to take a lot of it, and last year  an MRI showed this cyst was nearly gone. Can B12 deficiency [or B12 metabolism problems] also be linked to formation of arachnoid cysts? Antibiotics gave a lot of relief to the spinal cord pain. Can lingering bacterial or other infections lead to cyst formation in the spinal cord and brain?
Zoey