Dr. Nisha. S. R. Manuel, Dr. D. Niranjan


INTRODUCTION: The morphological variations of thyroid gland have been reported from different parts of the world1. The thyroid gland is the most common endocrine organ which gets operated throughout the globe. A wide range of morphological variations    and developmental anomalies of the thyroid have been reported in literature which can have numerous clinical and surgical implications2. The aim of the present study, is to   study about the possible morphological variation of  thyroid gland among the Tamil Nadu population. This study was conducted for a period of 36 months (3 years) in the department of   Anatomy, Government Medical College, Omandurar  Government Estate, Chennai-2, between  September 2016 -  September  2019   by  dissection method in 30   adult  cadavers(30- right & 30- left sides) . Then results were noted, tabulated and interpreted.


Pyramidal lobe, Levator Glandulae thyroideae, Agenesis, isthmus, thyroid gland

Full Text:



Anjan JyotiRajkonwar, Giriraj Kushre, Morphological Variations of the thyroid Gland among the people of upper Assam region of Northeast India;J of clinical and Diagnostic Research,2016Dec.Vol-10(12) -AC01-AC03

Har Simarjit Kaur,Upasna Kumar, Absent thyroid isthmus: Embryological and clinical implecations of a rare variation of thyroid gland revisited;Thyroid Research and Practice/May-August 2013/Vol 10/Iss 2/80-2.

Devi Sankar,Sharmila Bhanu.P Agenesis of isthmus of thyroid gland with bilateral levator glandulae thyroideae; Int J Anat Var,2009;2:29-30.

Bajwa SS, Sehgal.V. Anasthesia and thyroid surgery: the never ending challenges: ndian J Endocr Metab 2013:17.

Dixit D, Shilpa MB, Harsh MP. Agenesis of isthmus of thyroid gland in adult human cadavers: a case series. Cases Journal.2009; 2:6640.

Sinnathamby CS. Last`s anatomy, Churchchill livingstone Elsevier, 11th Ed-2006:351 - 352

Anil Kumar,Arindom Banerjee, V Harikrishna.` “ Case report: a congenital anomaly of thyroid gland with agenesis of isthmus and presence of pyramidal lobe” J of Evolution of Medical and Dental Sciences 2013; Vol2, Iss 41, October14; Pg:7899-7902.

G.J. Romanes Cunningham`s Manual of Practical Anatomy(2010) Volume Three Head and neck , fifteenth edition page number:65 – 69.

Ranada AV Rai, Pai.M, Nayak SR, Prakash, Krisnamuthy A et al., Anatomical variations of the thyroid gland-possible surgical implivations. Singapore Med J.2008;49(10)831-34.

Nurunnabi ASM, Alim A, Mahbub S, Sengupta K, Begum M, Khatun M., et al.Morphological and histologica study of the pyramidal lobe of the thyroid gland in Bangladeshi people. J Dhaka Med Coll.2009;7(2):94-100.

Begum M, Khatun M, Kishwara S, Ahmed R, Naushaba HA, Postmortem study of the pyramidal lobe of the thyroid gland in Bangladeshi people. J Dhaka Med Coll.200918(2):120-23.

Joshi SD, Joshi SS, Daimi SR, Athavala SA., The thyroid gland and its variation- A cadaveric study. Folia Morphol.2010;69(1):47-60.

Kulkarni.V, Sripadma.S, Deshpande SK., Morphological variations of thyroid gland – Medica Innovatica.2012;1 (2);36-38.

Veerahanumanaiah S, Dakshayani KR, Menasinkai SB.,Morphological Variations of thyroid gland.,Int J Res Med Sci.2015:3(1)53-57.

Mansingh RS, Mahesh ST,Santhosh D,.Morphological variations of thyroid gland.. International J of Health care and Biomedical Research., 2015;03(02);175-77

Rajkonwar AJ, Kusre G., Morphological variations of the thyroid gland among the people of Upper Assam Region of Northeast India: A cadaveric study. J of Clinical and Diagnostic Research; 2016 Dec, Vol- 10(12):AC01-AC03.



  • There are currently no refbacks.