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Table of Contents
LETTERS TO THE EDITOR
Year : 2018  |  Volume : 22  |  Issue : 2  |  Page : 290

Indeterminate thyroid nodule: Mystery continues despite recent advances


1 Department of Endocrinology, Bhaktivednata Hospital and Research Institute, Mira Road, Thane, India
2 Department of Endocrine Surgery, Bhaktivedanta Hospital and Research Institute, Thane and Bombay Hospital Institute of Medical Sciences, Mumbai, Maharashtra, India

Date of Web Publication14-May-2018

Correspondence Address:
Ameya Joshi
202, C Wing, Avirahi CHS, Premnagar, Near Shanti Garden, Mira Road (E), Thane - 401 107, Maharashtra
India
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/ijem.IJEM_604_17

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How to cite this article:
Joshi A, Agrawal R. Indeterminate thyroid nodule: Mystery continues despite recent advances. Indian J Endocr Metab 2018;22:290

How to cite this URL:
Joshi A, Agrawal R. Indeterminate thyroid nodule: Mystery continues despite recent advances. Indian J Endocr Metab [serial online] 2018 [cited 2018 Nov 15];22:290. Available from: http://www.ijem.in/text.asp?2018/22/2/290/232382



Sir,

We read with great interest the article “A pragmatic approach to an indeterminate thyroid nodule.” It was interesting to go through the meticulous thought process for decision-making in an indeterminate nodule, and the approach designed will definitely help in clinical practice. Equally realistic is the author's admission that cost of molecular studies in fine-needle aspiration cytology (FNAC) sample may be equal to the cost of surgery itself in our Indian setting.[1]

The article mentions about thyroid imaging reporting and data system scoring system (TIRADS) system based on ultrasound (US) characteristics of thyroid nodules. US findings can be further refined by use of color Doppler. US elastography is also becoming more accessible and is finding utility in decision-making in indeterminate nodules. TIRADS does not include Doppler or elastography findings. Thyroid multimodal-imaging comprehensive risk stratification scoring of the risk stratification systems is a risk stratification system incorporating TIRADS, color Doppler, and elastography findings. This risk stratification system had sensitivity of 96% and specificity of 95% for predicting malignancy when correlated with the final pathological diagnosis.[2],[3]

We would also like to highlight one of the limitations of US and FNAC which is conferred by the size of the nodule. Wharry et al.[4] documented 10.4% prevalence of malignancy in thyroid nodules more than 4 cm in size which were reported benign by FNAC as well as had no suspicious features by the US. Studies for molecular markers in this particular group of nodules are sparse. This calls for a more cautious approach in nodules more than 4 cm.

We would also like to bring to notice that though routine measurement of serum calcitonin levels is not advocated in nodular thyroid disease, a recently published study by Turk et al.[5] observed dAetection rate of 0.62% for medullary thyroid carcinoma (MTC) in nodular thyroid disease. The benefits from this clinical practice are that the surgeon is alerted to the need to perform total thyroidectomy and central compartment lymphadenectomy, which is the minimal surgical treatment for MTC. It may also improve outcomes in MTC due to early diagnosis.

Financial support and sponsorship

Nil.

Conflicts of interest

There are no conflicts of interest.



 
   References Top

1.
Seshadri KG. A pragmatic approach to the indeterminate thyroid nodule. Indian J Endocrinol Metab 2017;21:751-7.  Back to cited text no. 1
    
2.
Nell S, Kist JW, Debray TP, de Keizer B, van Oostenbrugge TJ, Borel Rinkes IH, et al. Qualitative elastography can replace thyroid nodule fine-needle aspiration in patients with soft thyroid nodules. A systematic review and meta-analysis. Eur J Radiol 2015;84:652-61.  Back to cited text no. 2
    
3.
Mahajan A, Vaish R, Arya S, Sable N, Pande S, Paul P, et al. Diagnostic performance of thyroid multimodal-imaging comprehensive risk stratification scoring (TMC-RSS) system in characterising thyroid nodules. J Clin Oncol 2017;35Suppl 15:15.e17588.  Back to cited text no. 3
    
4.
Wharry LI, McCoy KL, Stang MT, Armstrong MJ, LeBeau SO, Tublin ME, et al. Thyroid nodules (≥4 cm): Can ultrasound and cytology reliably exclude cancer? World J Surg 2014;38:614-21.  Back to cited text no. 4
    
5.
Turk Y, Makay O, Ozdemir M, Ertunc G, Demir B, Icoz G, et al. Routine calcitonin measurement in nodular thyroid disease management: Is it worthwhile? Ann Surg Treat Res 2017;92:173-8.  Back to cited text no. 5
    




 

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