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LETTER TO EDITOR
Year : 2016  |  Volume : 31  |  Issue : 3  |  Page : 248-249  

Left lobe hypoplasia of thyroid with right lobe ectopia: Radionuclide thyroid scan and ultrasonographic correlation


Mahajan Imaging, Fortis Flt. Lt. Rajan Dhall Hospital, B-1, Vasant Kunj, New Delhi - 110 070, India

Date of Web Publication7-Jun-2016

Correspondence Address:
Parul Mohan
Mahajan Imaging, Fortis, Flt Lt. Rajan Dhall Hospital, B-1, Vasant Kunj, New Delhi - 110 070
India
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/0972-3919.183612

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How to cite this article:
Mohan P, Vaidya A, Sharma M, Barthwal S, Mahajan H. Left lobe hypoplasia of thyroid with right lobe ectopia: Radionuclide thyroid scan and ultrasonographic correlation. Indian J Nucl Med 2016;31:248-9

How to cite this URL:
Mohan P, Vaidya A, Sharma M, Barthwal S, Mahajan H. Left lobe hypoplasia of thyroid with right lobe ectopia: Radionuclide thyroid scan and ultrasonographic correlation. Indian J Nucl Med [serial online] 2016 [cited 2019 Dec 14];31:248-9. Available from: http://www.ijnm.in/text.asp?2016/31/3/248/183612



Sir,

Developmental anomalies of the thyroid are rare. They are usually a result of abnormal descent rather than of abnormal development.[1],[2] Unilateral or bilateral hypoplasia or agenesis of one or both thyroid lobes, with or without ecopia, is a rare developmental anomaly.[3] Only a few cases have been reported in the world literature. Thyroid function may be altered in 38–47% of patients.[4],[5] Thyroid scan and ultrasonography play an important role in diagnosis.[6],[7]

We report a case of right lobe ectopic thyroid in a 20-year-old female with the hypoplastic left lobe of thyroid gland. The patient presented with a midline swelling at the base of tongue with dysphagia. Thyroid function test revealed subclinical hypothyroidism. A thyroid scan with technetium-99m pertechnate showed only right lobe of thyroid located slightly more superior to the eutopic position. No uptake was seen in the thyroid lobe on the left side [Figure 1]. Ultrasonography of the neck showed hypoplastic left lobe of thyroid [Figure 2]a and [Figure 2]b.
Figure 1: Thyroid scan showing the right lobe of thyroid gland as pyramidal in shape with the superior pole directed toward hyoid bone. Tracer distribution is mildly increased and homogenous in this lobe. No dominant hot or cold nodule noted. No significant tracer uptake noted in the left lobe of thyroid

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Figure 2: (a) Ultrasonographic images of thyroid showing right lobe of thyroid as lying at a slightly superior location compared to the left side. (b) Left lobe of thyroid is small in size and normal in echotexture

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There are no conflicts of interest.

 
   References Top

1.
Aslaner A, Aydin M, Ozdere A. Multinodular goitre with thyroid hemiagenesis: A case report and review of the literature. Acta Chir Belg 2005;105:528-30.  Back to cited text no. 1
    
2.
Karabay N, Comlekci A, Canda MS, Bayraktar F, Degirmenci B. Thyroid hemiagenesis with multinodular goiter: A case report and review of the literature. Endocr J 2003;50:409-13.  Back to cited text no. 2
    
3.
Vázquez-Chávez C, Acevedo-Rivera K, Sartorius C, Espinosa-Said L. Thyroid hemiagenesis. Report of 3 cases and review of the literature. Gac Med Mex 1989;125:395-9.  Back to cited text no. 3
    
4.
Véliz J, Pineda G. Thyroid hemiagenesis associated with Basedow-Graves disease. Report of a case. Rev Med Chil 2000;128:896-8.  Back to cited text no. 4
    
5.
Jain A, Pathak S. Rare developmental abnormalities of thyroid gland, especially multiple ectopia: A review and our experience. Indian J Nucl Med 2010;25:143-6.  Back to cited text no. 5
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6.
Kreisner E, Camargo-Neto E, Maia CR, Gross JL. Accuracy of ultrasonography to establish the diagnosis and aetiology of permanent primary congenital hypothyroidism. Clin Endocrinol (Oxf) 2003;59:361-5.  Back to cited text no. 6
    
7.
Sood A, Sood V, Sharma DR, Seam RK, Kumar R. Thyroid scintigraphy in detecting dual ectopic thyroid: A review. Eur J Nucl Med Mol Imaging 2008;35:843-6.  Back to cited text no. 7
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