A Case of Transient Thyroid Swelling following a Fine-needel Aspiration Cytology of the Thyroid Gland

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  • 甲状腺穿刺吸引細胞診後の一過性甲状腺腫大の1例
  • 症例 甲状腺穿刺吸引細胞診後の一過性甲状腺腫大の1例
  • ショウレイ コウジョウセン センシ キュウイン サイボウシン ゴ ノ イッカセイ コウジョウセンシュダイ ノ 1レイ

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Abstract

A 40-year-old woman presented to our hospital for close exploration of a right thyroid tumor which was detected at a medical checkup in her workplace. Ultrasonography revealed a 20-mm tumor at the superior pole of the right thyroid gland, and a fine-needle aspiration (FNA) cytology of the tumor was performed. The FNA cytology results indicated it to be a follicular tumor, but it was difficult to make the differential diagnosis. When about 30 minutes had passed after FNA, the patient abruptly developed swelling of the anterior cervical region, pain from the neck to the posterior aspects of the bilateral ears, and sore throat at swallowing. Dyspnea and hoarseness were absent. Ultrasonography revealed pronounced edematous swelling of the bilateral thyroid lobes with crack-like interstice within the center part. Furthermore, we confirmed swollen tissues in the anterior aspect of the thyroid, including the sternocleidomastoid muscle and anterior muscles of the neck. We administered 125mg of Solu-Medrol® by drip infusion and observed the clinical course. Her sore throat subsided 6 hours, the cervical swelling disappeared 18 hours, but dysphagia at swallowing persisted until 72 hours after the onset of symptoms. Then she was orally given 15mg of prednisolone for 3 days, followed by decreased dose of 10mg for further 3 days.<BR>Transient thyroid swelling following FNA cytology of the thyroid gland is a rare complication. We present our case together with a review of the literature.

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