The likely hood that there Was an unnecessary dose to the cerebellum which is located around the thyroid level is high and therefore possible fort eh case of your pd. What would ask is what type of response do you get from sinemet to be more confident of this type of injury being caused by the radiation doses received and the onset age of the pd. john -----Original Message----- From: Parkinson's Information Exchange Network [mailto:[log in to unmask]] On Behalf Of John Testa Sent: Wednesday, November 04, 2009 9:19 AM To: [log in to unmask] Subject: Re: Stereotactic radiosurgery (SRS) I am skeptical about anything dealing with radiation. When I was 6 years old in 1954 I received X-ray treatments for swollen adenoids. Many children who received that treatment developed cancer of the thyroid as adults.. I did not get cancer, but I think the treeatment was the cause of my PD. John 61/15 - Original Message ----- From: "john thomas" <[log in to unmask]> To: <[log in to unmask]> Sent: Tuesday, November 03, 2009 2:35 PM Subject: Re: Stereotactic radiosurgery (SRS) ---------------------------------------------------------------------- To sign-off Parkinsn send a message to: mailto:[log in to unmask] In the body of the message put: signoff parkinsn