Hemiagenesis of unilateral lobe of thyroid gland

Authors

  • Sameer Karmacharya Janaki Medical College Teaching Hospital Ramdaiya, Janakpur, Nepal
  • Santosh Kumar Sah Janaki Medical College Teaching Hospital Ramdaiya, Janakpur, Nepal
  • Sunil Adhikari Janaki Medical College Teaching Hospital Ramdaiya, Janakpur, Nepal

DOI:

https://doi.org/10.3126/jmcjms.v8i1.31562

Keywords:

Thyroid Gland, Hemiagenesis, congenital abnormality, Lobulation defect

Abstract

The thyroid gland begins its development during the 3rd week of gestation from the median endodermal thickening in the floor of the pharynx that later form the median diverticulum. During development, the thyroid gland normally descends to its typical location in front of the pharynx. Failure of descent has been suggested as a cause of thyroid hemiagenesis; however, the compensatory growth of the other lobe suggests a lobulation defect rather than a failure of descent. Abnormalities during the development lead to defective organogenesis or descent, complete or partial absence of the gland with or without ectopic thyroid tissue. Thyroid hemiagenesis is a rare congenital abnormality characterized by the absence or failure to develop one lobe of the thyroid gland with or without the absence of the isthmus. Unilateral thyroid agenesis (thyroid hemiagenesis) is a rare disorder with less than 300 cases currently in the world literature. Here, we report a case of left hemiagenesis of thyroid.

Downloads

Download data is not yet available.
Abstract
157
PDF
138

Author Biographies

Sameer Karmacharya, Janaki Medical College Teaching Hospital Ramdaiya, Janakpur, Nepal

Assistant Professor, Department of Otorhinolaryngology and Head and neck surgery

Santosh Kumar Sah, Janaki Medical College Teaching Hospital Ramdaiya, Janakpur, Nepal

Assistant Professor, Department of Otorhinolaryngology and Head and neck surgery

Sunil Adhikari, Janaki Medical College Teaching Hospital Ramdaiya, Janakpur, Nepal

Assistant Professor, Department of Radiodiagnosis

Downloads

Published

2020-09-27

How to Cite

Karmacharya, S., Sah, S. K., & Adhikari, S. (2020). Hemiagenesis of unilateral lobe of thyroid gland. Janaki Medical College Journal of Medical Science, 8(1), 75–77. https://doi.org/10.3126/jmcjms.v8i1.31562

Issue

Section

Case Report