We present a case of a middle-aged woman with a mass in the posterior third of the tongue which was diagnosed as a tongue haemangioma. The tumour was successfully excised via a midline mandibular osteotomy and tongue splitting approach. The histopathology examination, however, revealed the 5x4 cms mass to be a lingual thyroid. The salient features of this unusual presentation of a thyroid enlargement will be discussed. (+info)
Medullary carcinoma in a lingual thyroid.
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Total ectopia of thyroid is a rare phenomenon and malignant change in an ectopic thyroid is even rarer. We report a case of medullary carcinoma in a total ectopic lingual thyroid occurring in a 45-year-old woman who presented with dysphagia, plummy voice and a round sessile mass at the base of the tongue. The mass was extirpated using Trotter's midline approach. Upon examination, it was found to be medullary carcinoma in an ectopic thyroid. Permanent substitution therapy with thyroxine secured the euthyroid status of the patient. The embrylogical basis and a review of literature regarding carcinomatous change in an ectopic thyroid are also discussed. There is a need to investigate for an ectopic thyroid, or even total ectopia, in the case of any smooth mass found at the base of the tongue. (+info)
Lithium-induced enlargement of a lingual thyroid.
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Lingual thyroid is a rare developmental anomaly. It is the result of failure of the thyroid to descend from the foramen caecum to its prelaryngeal site. Lithium is a known goitrogen, but has never been reported to cause symptomatic enlargement of the lingual thyroid. We describe a 40-year-old woman, who presented with a foreign body sensation and progressive dysphagia caused by an ectopic lingual thyroid tissue measuring 4 cm x 3 cm x 3.5 cm. She had been taking lithium for treatment of bipolar disorder and had hypothyroidism. Her symptoms were relieved after excision of the ectopic thyroid tissue. (+info)
Lingual thyroid causing dysphagia and dyspnoea. Case reports and review of the literature.
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Lingual thyroid is a rare embryological anomaly and originates from failure of the thyroid gland to descend from the foramen caecum to its normal eutopic pre-laryngeal site. The ectopic gland located at the base of the tongue is often asymptomatic but may cause local symptoms such as dysphagia, dysphonia with stomatolalia, upper airway obstruction and haemorrhage, often with hypothyroidism. Two cases are presented, one in a 62-year-old female and the other in a 42-year-old female, both of whom complained of sensation of a foreign body and progressive dysphagia and dyspnoea caused by ectopic lingual thyroid. Treatment was performed with a partial endoscopic removal and an external cervical approach, followed by substitutive hormone treatment, respectively. Diagnostic procedures and therapeutic options are discussed and a review has been made of reports of lingual thyroid appearing in the literature. (+info)