Empty Sella Syndrome 
A look at this disorder and the diagnosis, symptoms, and treatment.
http://www.umm.edu/endocrin/sella.htmEmpty Sella Syndrome 
Features a yahoo group to share information and support for persons affected by this syndrome.
http://groups.yahoo.com/group/emptysella/
MedlinePlus Medical Encyclopedia: Empty sella syndrome 
Provides illustrations, causes, symptoms, tests, treatment, prognosis, and complications.
http://www.nlm.nih.gov/medlineplus/ency/article/000349.htm