Polymyositis is what killed my happy-go-lucky boy, Yukon. One of the side effects that he developed was the aquired adult MegaE which resulted in bout after bout of aspiration pneumonia. He was a big boy - 30" at the shoulder and his muscles were wasting away, resulting in problems walking without my help, difficulty standing without help, and he kept getting weaker and weaker from the pneumonia, so I had to have him put down. He was only 10-1/2 when he died. I don''t know if it's changed, but back in the late 90's polymyositis was extremely difficult to diagnose. He had test after test after test eliminating multitudes of problems including MG. Finally my vet contacted a vet at the University of California, Davis who diagnosed him as having polymyositis. Gayle & the Hooligans! http://www.picturetrail.com/arycrest - Link to The Hooligans Albums ----- Original Message ----- From: "Katie Halfen" <kthalfen@xxxxxxxxxxx> To: "gsd list" <showgsd-l@xxxxxxxxxxxxx> Sent: Saturday, June 26, 2010 6:42:40 PM GMT -08:00 US/Canada Pacific Subject: [ SHOWGSD-L ] Megaesophagus ... Causes of acquired mega: can be idiopathic (we don't have a clue), hypothyroid disease, Addison's disease/hypoadrenocorticism (diagnosed by bloodwork), myasthenia gravis-this is a neurotransmitter problem which can be fixed and has a specific test, systemic lupus erythematosus (autoimmune disease), heavy metal toxicity (lead), CNS neoplasia (this can also be from neoplasia in the back of the throat area), trauma, polymyositis, or distemper. ... Â Katie Halfen DVM Casamoko Shepherds www.casamoko.com We have Puppies!! ____________________________________________________________ Get Free Email with Video Mail & Video Chat! http://www.netzero.net/freeemail?refcd=NZTAGOUT1FREM0210 ============================================================================ POST is Copyrighted 2010. All material remains the property of the original author and of GSD Communication, Inc. NO REPRODUCTIONS or FORWARDS of any kind are permitted without prior permission of the original author AND of the Showgsd-l Management. ALL RIGHTS RESERVED. ALL PERSONS ARE ON NOTICE THAT THE FORWARDING, REPRODUCTION OR USE IN ANY MANNER OF ANY MATERIAL WHICH APPEARS ON SHOWGSD-L WITHOUT THE EXPRESS PERMISSION OF ALL PARTIES TO THE POST AND THE LIST MANAGEMENT IS EXPRESSLY FORBIDDEN, AND IS A VIOLATION OF LAW. VIOLATORS OF THIS PROHIBITION WILL BE PROSECUTED. For assistance, please contact the List Management at admin@xxxxxxxxxxx VISIT OUR WEBSITE - http://showgsd.org NATIONAL BLOG - http://gsdnational.blogspot.com/ ============================================================================