Vol.103 No.2 contentsPRACTICA OTO-RHINO-LARYNGOLOGICA
Vol. 103 No. 2 February 2010
Fine-Needle Aspiration Cytology for Diagnosing Thyroid
Nodules Based on a New Reporting System
Yuichiro Tsuji
(Osaka Prefecture Saiseikai Nakatsu Hospital, Osaka Medical College)
Ibuki Hayashi
(Osaka National Hospital)
Keiko Hasegawa
(Osaka Medical College)
Fine-needle aspiration cytology (FNAC) under ultrasonographic imaging is currently one of the safest, most accurate, and most cost-effective presurgical management of thyroid nodules, although follicular adenomas and carcinomas remain difficult to differentiate.
The latest edition 6th, general rules for describing thyroid cancer published in 2005. Using a new thyroid cytology reporting system, we applied to group of 1510 subjects with thyroid gland tumors between October, 2003 and December, 2007.
Of these, "inadequate" accounted for 219 (15％) and "adequate" for 1291 (85％) in cytological reporting. "Normal and benign" accounted for 986 (76％), "indeterminate" for 159 (12％), "malignancy suspected" for 25 (2％), and "malignant" for 121 (9％) among "adequate" cases. 137 subjects underwent surgery and histological examinations, FNAC yielded an accuracy of 91％, specificity 79％, and sensitivity 96％.
Compared to Papanicolaou classification, the new classification is superior in accurately diagnosing thyroid lesions.
Key words :fine-needle aspiration cytology, thyroid nodule, reporting system, ultrasonography, follicular neoplasm