Talk to Cardiac Surgeon on Thoracic Surgery

Assalamu alaykum. My CT scan report showed a mass lesion in chest near heart area. CT scan report says it's probably thymoma or germ cell tumor. I consulted a board of thoracic surgeons but they had a difference of opinion. Some said its thymoma but senior most surgeon said very confidently that it's neither thymoma nor germ cell tumor rather its thyroid. I must mention here that I had thyroidectomy about 7 years ago. Thoracic surgeons advised few lab blood tests to check if it's cancer or not and AL hamdu lillaah alhamdulillah all results are within range. Kindly advise if it's thymoma or just thyroid. However board of thoracic surgeons was unanimously agreed upon immediate surgery whatever it is either thymoma or thyroid. They said that no biopsy will be done rather mass will be cut through chest thoracic surgery and sent to histopathology lab.