Single hypoechoic solid thyroid nodule over 1cm with mild vascularity?

Needs FNA: Most nodules of the thyroid are benign. However, fine needle aspiration (FNA) biopsy of a nodule is indicated in your age group for nodules over 1 cm in size. Having increased vascularity raises the index of suspicion slightly. You should have thyroid function (free T4, TSH) checked prior to biopsy.

Hyperplastic nodule: This sounds like a hyper plastic nodule. These are usually benign. In the absence of prior studies, this usually is followed up to show it's stable nature. If it changes or grows it would need a biopsy. Nonetheless would suggest an in depth discussion with your doctor