Health Dictionary Find a Doctor

Thyroid adenoma classification

Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor(s)-in-Chief: Roukoz A. Karam, M.D.[2]

Overview

Overview

Thyroid adenoma may be classified based on FNA cytology into 6 groups include macrofollicular, adenomatoid, colloid adenomas, nodular goiter, lymphocytic thyroiditis and granulomatous thyroiditis.

Classification

Classification

Thyroid adenoma may be classified based on Fine needle aspiration (FNA) cytology into 6 groups (known as The Bethesda System for Reporting Thyroid Cytopathology (TBSRTC)) :^[1]
- Macrofollicular
- Adenomatoid/hyperplastic nodules
- Colloid adenomas
- Nodular goiter
- Lymphocytic thyroiditis
- Granulomatous thyroiditis

For information on the classification of thyroid nodules, click here.

Reference

Reference

↑ Cibas ES, Ali SZ (2009). “The Bethesda System for Reporting Thyroid Cytopathology”. Thyroid. 19 (11): 1159–65. doi:10.1089/thy.2009.0274. PMID 19888858.

Looking for the patient version?

Back to the patient-friendly article

Terms and Conditions

© 2026 MyEClinic – IFTM Institut für Telematik in der Medizin GmbH