Thyroid flashed up

if it’s follicular carcinoma (Thyroid), it will never show up in Ultra sound or FNC/FNA. Need to have a hemithyroidectomy to assess whether it’s cancerous or not.  

We don't get a lot of questions about PET scans because they are very rarely used with thyroid cancers and when they are, it's to look for places the thyroid cancer might have spread too  - I think I only know one person in the TC group who had one in 11 years with the group.

As I understand it, PET scans pick up areas of high metabolic activity. That includes cancer cells, but also PET scans light up areas that are not necessarily cancer, including areas of inflammation, infection, trauma, or recent surgery.

When a doctor first starts investigating a possible thyroid lump, they usually start with an ultrasound scan but it takes more steps (fine needly biopsy and sometimes even surgery) to conclusively diagnose a thyroid cancer.