Thyroid hemiagenesis is a rare congenital anomaly resulting from failure of one thyroid lobe development. We report a 23-year-old female presented with Hashimoto's thyroiditis in left lobe, associated with hemiagenesis of right lobe and isthmus which was previously diagnosed as Graves' hyperthyroidism, but developed further into Hashimoto's thyroiditis after being treated with antithyroid drugs...

The thyroid gland is the first endocrine gland to start developing in the embryo. Morphological and structural developmental anomalies of the thyroid gland are relatively rare. Thyroid developmental anomalies (TDA) (excluding biochemical abnormalities) can be divided into three groups namely agenesis (or athyreosis), dysgenesis, and anomalies due to persistence of the thyroglossal tract (Jain a...

Copyright c 2016, the Korean Thyroid Association. All rights reserved. This is an open-access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/4.0/), which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited. Thyroid Hemiagenesi...

Thyroid hemiagenesis resulting from the failure of embryologic development of one thyroidal lobe is a very rare anomaly. It is usually incidentally discovered during the investigation of accompanying thyroid disorders. Here we report three cases with right lobe agenesis in two patients and left lobe agenesis in one patient. Two of them were hyperthyroid, while the other euthyroid patient had a ...

OBJECTIVES To investigate the causes of congenital hypothyroidism in children more than 3 years of age and to document the frequency of transient vs permanent hypothyroidism. DESIGN Hospital based observational study. SETTING Pediatric endocrine clinic of a medical college. PATIENTS Children over 3 years of age, on treatment for congenital hypothyroidism. INTERVENTION Thyroid function t...

Departments of Endocrine Surgery, Pathology, Nuclear Medicine, and Internal Medicine, Buddhist Tzu Chi General Hospital and Buddhist Tzu Chi University, Hualien. Received: 29 January 2001. Revised: 10 December 2001. Accepted: 5 February 2002. Reprint requests and correspondence to: Dr. Shih-Ming Huang, Department of Endocrine Surgery, Buddhist Tzu Chi General Hospital and Tzu Chi University, 70...

Unilateral thyroid agenesis (thyroid hemiagenesis) is a rare disorder with less than 300 cases currently in the world literature. The current clinical importance of this condition lies in the possibility that such patients may be at an increased risk for a wide range of future pathology in the contralateral lobe. If this indeed proves to be the case in future, these patients need to be identifi...