Some patients with ectopic thyroid gland or athyreotic patients have one or more cysts in empty thyroid bed. The origin of these cysts is uncertain. We present the patient with lingual thyroid gland and small cyst in empty thyroid bed featuring the diagnostic algorithm used and discussing the possible etiologic scenarios.
Keywords: SPECT/CT; Tc-99m-pertechnetate scintigraphy; cyst in empty thyroid bed; iodine-131 scintigraphy; lingual thyroid.
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