Is it poss. cancer? us results thyroid nodule: solid, heterogeneous & isoechoic nodule w/in the mid to lower right lobe, 4.2cm, increas. vascularity

Suspicious: You should be guided by an endocrinologist as to further testing which will include a fna biopsy. Sometimes it is just best to remove a solid nodule of this large size.

Yes it's possible : Any thyroid nodule over 4 cm needs to be removed surgically to make sure not cancerous per ata guidelines. I would still get a fna first before going to surgery but needs to be removed. More info on my website on thyroid nodules at www.Cvsurgicalgroup.Com.