Fig. 1.
Sinonasal leiomyosarcomas present as non-encapsulated irregular fleshy masses with areas of necrosis (a) covered by respiratory mucosa (b). They range from low-grade (c) to high-grade (d) with variable mitotic activity
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.