東野 英利子¹, 植野 映², 角田 博子¹, 高崎 雅子³, 深沢 政勝⁴, 秋貞 雅祥²

Eriko TOHNO¹, Ei UENO², S. Hiroko TSUNODA¹, Masako TAKASAKI³, Masakatsu FUKASAWA⁴, Masayoshi AKISADA²

¹筑波大学附属病院放射線科, ²筑波大学臨床医学系, ³筑波大学附属病院生理機能検査室, ⁴筑波大学附属病院病理

¹Department of Radiology, Tsukuba University Hospital, ²Institute of Clinical Medicine, Tsukuba University, ³Devision of Physiological Diagnosis, Tsukuba University Hospital, ⁴Department of Pathology, Tsukuba University Hospital

キーワード : Thyroid cancer, Ultrasonic guidance, Aspiration cytology

Ultrasonically (US) guided fine-needle aspiration cytology was performed on 111 thyroid nodules and 4 swollen lymph nodes accompanied with thyroid disease. Thirty-four nodules were cytologically diagnosed as carcinoma.
Forty-five nodules were proved histologically. Accuracy of cytology was 84% and specificity was especially high(91%). Accuracy rate of echographic diagnosis for such small nodules was 69% and sensitivity was high (71%).
We consider that the combination of thyroid echography and fine-needle aspiration cytology is the most reliable method for diagnosis of small thyroid nodules.