A local veterinarian in my town ended up in ER one night with severe shortness of breath. They did a chest x ray and found an ENORMOUS thymoma which encompassed his whole sternal area and even crept under his collarbones. As it turned out, he had Stage IV cancer.

Remarkably, he has survived about 4 years now without a recurrance of the cancer. Interestingly enough, he never had a single MG symptom through it all---"just" cancer. LOL We had a talk at our kids' soccer game when he was going through chemo and had to laugh--there I was with a completely normal thymus and severe MG and he with a thymoma as big as a pizza and symptom free.

Hope things turn out for you.

Missy