T3 (liothyronine) 5.38 t4 > 24.86 tsh < 0.005, diffuse enlargement of thyroid, enlarged left level iii lymph node (19x5mm), multiple sub-cm pretracheal lymph nodes?

Thyroid enlargement: You do not give the "normal range" of values, but it appears you are hyperthyroid (elevated ft4, low tsh). Thyroid is diffusely enlarged (no nodules). This is consistent with graves disease. There is a significant lymph node, but this can occur with graves, and does not necessarily suggest cancer. You need to see an endocrinologist to sort through the information.