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Bethesda System for Thyroid Classification

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Introduction

This section is intended to provide practical tools for the latest information regarding Thyroid FNA's. Admittedly, there is some personal gain in this, as I will certainly utilize this to assist me with my daily Thyroid FNA signout. Hopefully, through this practical excercise, other users will find this information helpful as well. Additionally, I welcome others to contribute their insights and practical experience in this area as well. There is an excellent article available on the American Cancer Society's website, that I strongly recommended as a study aide to learn more about new changes in thyroid classification and management. Lester J. Layfield, MD1, Edmund S. Cibas, MD2, Hossein Gharib, MD3 and Susan J. Mandel, MD, MPH4. Thyroid Aspiration Cytology: Current Status. CA Cancer J Clin 2009; 59:99-110.

Thyroid FNA Classification

TABLE 1 National Cancer Institute Thyroid Fine-Needle? Aspiration (FNA) Guidelines Committee IV: The Suggested Thyroid FNA Classification Scheme

SUGGESTED CATEGORY ALTERNATE CATEGORY* RISK OF MALIGNANCY
Benign   <1%
Atypia of undetermined significance Indeterminate follicular lesions, R/O neoplasm, atypical follicular lesion, cellular follicular lesion 5-10%
Neoplasm Suspicious for neoplasm 20-30%
Suspicious for malignancy - 50-75%
Malignant - 100%
Non-diagnostic Unsatisfactory -
*These terms can be used instead of the suggested category terms (based on website response and National Cancer Institute meeting attendees).

Citations/Credits

Table 1. National Cancer Institute Thyroid Fine-Needle? Aspiration (FNA) Guidelines Committee IV: The Suggested Thyroid FNA Classification Scheme Lester J. Layfield, MD1, Edmund S. Cibas, MD2, Hossein Gharib, MD3 and Susan J. Mandel, MD, MPH4. Thyroid Aspiration Cytology: Current Status. CA Cancer J Clin 2009; 59:99-110.
Thyroid Images

Coming soon!! Image 

Thyroid FNA Management

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Citations/Credits FIGURE 1. Post-FNA Management for Diagnostic Categories. Lester J. Layfield, MD1, Edmund S. Cibas, MD2, Hossein Gharib, MD3 and Susan J. Mandel, MD, MPH4. Thyroid Aspiration Cytology: Current Status. CA Cancer J Clin 2009; 59:99-110.



	
	
	
	
	
	

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