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

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 2a and b].