Multiple Morphological Variations in the Thyroid Gland: Report of two Cases.
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Date
2015-10
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Abstract
The variety of multiple morphological variations in the thyroid gland is found as a result of disturbed
organogenesis in humans as agenesis, hypoplasia, accessory, ectopy and hemiagenesis.
In the routine undergraduate dissection of the thyroid gland, multiple anomalies of the thyroid gland were
encountered in 50 and 60 years old female and male cadaver respectively. These were in form of absent isthmus
with accessory thyroid lobe in between two lateral lobes, pyramidal lobe arising from left lobe of thyroid with
levator glandulae thyroidae in first case. Second case showed narrow isthmus related to first tracheal ring and
levator glandulae thyroidae arising from left lobe.
In these case studies, we highlight various developmental anomalies of the thyroid gland as absent isthmus,
pyramidal lobe and accessory lobe with levator glandulae thyroidae. Hence a thorough knowledge of such
morphological variations of thyroid gland helps the surgeons in better planning of safe, effective and
uncomplicated operative procedures in resection of thyroid and tracheotomy procedures.
Description
Keywords
Thyroid gland, Pyramidal lobe, Isthmus, Accessory thyroid lobe, Levator glandulae thyroidae, Variations
Citation
Nikumbh Roopali D, Nikumbh Dhiraj B , Doshi Megha A. Multiple Morphological Variations in the Thyroid Gland: Report of two Cases. International Journal of Anatomy and Research. 2015 Oct-Dec; 3(4): 1476-1480.