. Author manuscript; available in PMC: 2011 Apr 1.

Published in final edited form as: Otolaryngol Clin North Am. 2010 Apr;43(2):229–238. doi: 10.1016/j.otc.2010.01.002

Table 2.

National Cancer Institute Thyroid Fine-needle Aspiration State of the Science Conference; Bethesda, MD

Proposed categories	Risk of malignancy
Benign	<1%
Follicular lesion of undetermined significance	5-10%
Neoplasm (follicular or Oncocytic)	20-30%
Suspicious for malignancy	50-75%
Malignant	100%
Nondiagnostic	N/A

Reproduced with modification from (29)

Baloch ZW, LiVolsi VA, Asa SL, Rosai J, Merino MJ, Randolph G, et al. Diagnostic terminology and morphologic criteria for cytologic diagnosis of thyroid lesions: a synopsis of the National Cancer Institute Thyroid Fine-Needle Aspiration State of the Science Conference. Diagn Cytopathol 2008;36(6):425-37