Dear Dr. Gould,
Once again I am writing you to thank you for your kind and thoughtful insights. Not only do I feel I got a clearly presented lesson in anatomy and diagnosis (your use of metaphors is wonderful), but you helped me feel better about my treatment decisions. As someone dealing with the emotional side effects of prednisone, I am especially grateful to you for helping me feel capable of making informed decisions.
Thank you again for our willingness to share your professional opinion with me. You came so highly recommended and your treatment on March 14th was very effective.