異所性甲状腺に発生したと思われる乳頭癌の1例

概要

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An aberrant thyroid occurs due to an improper descent of the thyroid primordium. Thus, the thyroid of such patients may not be in the appropriate position, and often occupies the base of the tongue. The prevalence of malignant tumors in an aberrant thyroid is extremely low. This paper presents a patient with a papillary carcinoma arising from an aberrant thyroid. The patient was an 85 year-old male who presented with a foreign-body sensation in the throat as his chief complaint. An enlarged tumorous growth was confirmed in the base of the tongue, and the results of <SUP>201</SUP>Tl scintigraphy suggested a malignant tumor. Therefore, a biopsy was performed and the patient was diagnosed as having a papillary carcinoma. Based on his clinical course and the results of the diagnostic imaging, we determined that the thyroid occupied an appropriate position, and thus the papillary carcinoma was believed to have developed in the aberrant thyroid at the base of the tongue
耳鼻咽喉科臨床学会の論文