I don't know about dogs but I did have a cat years ago whose intestines and stomach were up in the chest cavity. There was not really anything we could do and the vets were really baffled about why. She was fine though. They just left her as is and she lived her life fairly normal (for a cat with feline leukemia).
SBD Posejpal's Leyna, HCTs 6/16/2010
SBD Posejpal's Hades, 5/9/12
At the rainbow bridge:
Zappa 12/27/00-1/23/12 You are my heart, my soul, and my best friend. You will be with me always.
Zeus 5/9/12-8/13/12 You taught me strength. Run free.