No, mine did not spread. I had a thymectomy one month after it was discovered. I had been having chest pains for about 9 months before that, which probably can be attributed to the thymoma. I kept thinking I was having gall bladder problems. I had sharp pains in my breast bone, right where the thymus is. I also got charlie horses (cramps) in my left ribs. I never had a sore throat though.

My thymoma did not show up on xrays or on the MRI, only on a CT scan. I don't consider myself to have cancer since it was benign and removed. I have also had about 3 or 4 cancerous moles removed from my skin.