Fetal Adenoma, also known as microfollicular adenoma, is related to thyroid gland follicular carcinoma and hypothyroidism, congenital, nongoitrous, 2. An important gene associated with Fetal Adenoma is TG (Thyroglobulin), and among its related pathways/superpathways is G12-G13 in Cellular Signaling. Affiliated tissues include thyroid and salivary gland.