Could FNB on 2.3cm Thyroid Nodule cause problem if it IS cancer? Like breaking the seal & spreading cancer faster. Deciding on FNB or Lobe removal?

FNB is safe. FNB is commonly done on thyroid nodules and lumps in the breast. it is the first step to make a diagnosis of Cancer. it is better to do FNB than surgery to remove a lump the surgeon needs to know ahead of time what he/she is removing? FNB next is the way to go in your case.