Hemiagenesis of the thyroid gland detected by coincidence-what is the clinical relevance? : Case report and review of the literature.

Hemiagenesis of the thyroid gland (THA) represents a rare congenital anomaly. It is characterized by the absence of one thyroid lobe, and sometimes the isthmus as well. It can occur with all kinds of other thyroid pathologies that may be present in the remaining thyroid lobe.