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.
Ultrasonographic images (1: B-mode ultrasonographic appearance and size measurements of a submandibular lymph node, 2: Two different lymph nodes in a single image, blue arrows, and 3: Doppler ultrasound scanning of a submandibular lymph node with hilar vascularity, red arrow).
