Prognosis is much worse for stage III or IV<unk> s as compared with stage I and II tumors. Invasive<unk> s uncommonly can also metastasize, generally to pleura, bones, liver or brain in approximately 7% of cases. A study found that slightly over 40% of observed patients with stage III and IV tumors survived for at least 10 years after diagnosis. The median age of these patients at the time of<unk>  diagnosis was 57 years. Patients who have undergone thymectomy for<unk>  should be warned of possible severe side effects after yellow fever vaccination. This is probably caused by inadequate T-cell response to live attenuated yellow fever vaccine. Deaths have been reported.
Thymoma
Thyroid nodule
Lymphoma
Histiocytoma
Thyroid adenoma
Endemic goitre
Thyroid cancer
Thyroid lymphoma