Publication date: Available online 18 February 2019
Source: American Journal of Otolaryngology
Author(s): Aurora Vincent, Ameya Jategaonkar, Sameep Kadakia, Yadranko Ducic
Abstract
Objective
Clinically significant lingual thyroid tissue has a prevalence of 1/3000–10,000, and in 70% of these individuals, the lingual thyroid is their only thyroid tissue. Malignant transformation is exceedingly rare. Herein, we present a case of lingual thyroid carcinoma with a systematic literature review and description of our treatment technique.
Data sources
PubMed, Ovid.
Review method
The primary author performed a search of the literature for reports of lingual thyroid carcinoma or ectopic thyroid carcinoma associated with the tongue. Articles that did not present novel data, presented cases of ectopic thyroid carcinoma outside the tongue, non-malignant cases, non-thyroid carcinomas, or were non-English articles were excluded. Studies were limited to those published in the last 60 years.
Results
There are 39 cases reported in the literature. 23 cases occurred in females. Age at diagnosis ranged from 12 to 86; cases were more commonly diagnosed in the second decade of life, then in the 5th and 6th decades of life. Dysphagia, globus sensation, episodes of bleeding, voice changes, and presence of a neck mass were common symptoms at initial presentation. Nearly all patients underwent some form of pre-operative imaging, but practices varied as to the type of imaging. Treatment included surgical excision of the tumor in all but one case that was successfully treated with radioactive iodine therapy alone.
Conclusions
Surgeons should be aware of lingual thyroid, its presentation, workup, and carcinoma treatment. Tumors are amenable to surgical excision, possibly followed by radioactive iodine therapy. Advances in robotic and endoscopic surgery over the past decade now allow for less morbid excisions of lingual thyroid tumors.
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