An official website of the United States government
Here's how you know
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 mass consists of dilated eosinophilic material-containing spaces. A layer of cells cover the inner surface (HE ×100, HE ×400). Cells stain positive for CD 34 and negative for EMA. HE hematoxylin–eosin, EMA epithelial membrane antigen