foamy macrophages in thyroid FNA

Etiology

 Amiodarone-induced change in thyroid

• https://twitter.com/aakasharmand/status/727148670987149312

 hypercholesterolaemia due to hypothyroidism
 thyroid palpation-induced changes
 tumoral stoma of papillary thyroid carcinoma (PTC)

• Foamy macrophages only without thyroglobulin level information in FNAC could raise the possibility of cystic metastatic papillary thyroid carcinoma (PTC) even if no identifiable tumor cells are found.
• Foamy cells can be found in the stroma of papillary thyroid carcinoma (PTC).

See also

 amiodarone
 foamy macrophages in thyroid

• foamy macrophages in follicles
• foamy macrophages in thyroid FNA

References

 Importance of foamy macrophages only in fine needle aspirates to cytologic diagnostic accuracy of cystic metastatic papillary thyroid carcinoma. Koo JS, Kwak JY, Jung W, Hong S. Acta Cytol. 2010 May-Jun;54(3):249-54. PMID: 20518406