Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
FNA of metastatic melanoma to the thyroid. (A) Infiltrating single cells of melanoma are seen in the background of nonneoplastic follicular cells (Papanicolaou stain, original magnification ×400). (B) Melan A immunochemical stain highlighting the tumor cells; the background normal follicular cells are negative. (Original magnification ×400).
