Good luck, and best wishes for Guardian. Our first Bernese Mt dog had a tumor on her spleen when she was six. Our vet discovered it during her yearly exam and performed surgery to remove the spleen. She lived to 11 1/2 years old, about 4 years beyond their normal life span. A good vet is worth their weight in gold.
2004 Mini Cooper 43,000 mi
2006 Dakota 4.7 156,000 mi
1986 GL1200A 74,500 mi
2001 Buick LeSabre Limited 299,800 mi
2001 Subaru Outback 169,000 mi