Free Online Atlas of Thyroid Cytopathology

The thyroid web atlas contains close to 300 images of key thyroid lesions in an easy-to-search format. All images have been independently reviewed and approved by the committee members. Although the majority of the images presented here are from direct smears of an FNA sample, there are numerous examples of liquid-based preparations as well, illustrating the key morphologic differences. Emphasis has been placed on presenting "classic' examples of common thyroid lesions, but images from uncommon and rare diseases are included as well to make this as comprehensive as possible. The images are formatted to conform to the print atlas "The Bethesda System for Reporting Thyroid Cytopathology"

Open atlas here:
Papanicolaou Society of Cytopathology Online Atlas Portal