Squamous Cells in Thyroid Cytology and Their Clinical Significance: A Multi-Institutional Study.

Background: Squamous cells are uncommon in thyroid fine needle aspirations (FNAs) presenting diagnostic challenges. We report our multi-institutional experience.

Materials And Method: The electronic data were searched for thyroid FNAs containing squamous cells at the Johns Hopkins Medicine, New York University Langone Hospital, United States, and Fimlab Laboratories, Finland (2001-2023).