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.
The other nasal PEComa (Case 2) had slightly larger cells with more cytoplasmic clearing and a delicate vascular stroma (top; H&E 100×). In this example, scattered cells with finely granular brown melanin pigment were present (top; inset 400×). The tumor was strongly positive for SMA (middle; 200×) and patchy HMB45 staining (bottom; 200×)
