Hi ebethbb2,
Welcome to the group! I also read that if any was missed it could grow back, but it dosen't happen very often. Are you concerned that this has happened to you? I would think a CT scan would be able to confirm that. When did you have your thymectomy? Would like to know more of your story when you feel comfortable. Everyone here is very supportive and helpful. Hope to hear from you. Take care.
Hugs,
Pat