Oops - as well, I am playing catch-up with the posts, and did not see Dr. Kellon's post to you about other possible reasons for the pot-belly and lack of topline. Please go with what Dr. Kellon says! :)
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Jaini Clougher (BSc, BVSc)
Merlin (over the bridge), Maggie, Gypsy, Ranger
ECIR mod/support, BC 09
DDT+E = effective treatment for PPID and EMS/IR equines: https://bit.ly/2J4ZgYT

https://ecir.groups.io/g/CaseHistory/files/Jaini%20and%20Merlin-Maggie-Gypsy .
https://ecir.groups.io/g/CaseHistory/album?id=34193.
https://ecir.groups.io/g/CaseHistory/album?id=39711