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.
Case 8 was an example of sinonasal melanoma that consisted of undifferentiated appearing small round cells with abundant hemorrhage (a). S100 protein was completely negative. Note the small nerve that served as a positive internal control (b). SOX10 immunostaining, on the other hand, was strong and diffuse in both the tumor and the small nerve (c)
