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.
Galaxy sign. The figure shows two ill-defined nodular consolidations in the left upper lobe, surrounded by satellite small nodules (white arrows in a and b). The presence of small nodules—close to the central nodular areas—resemble the appearance of a “galaxy” (evocated in the embedded figure c). This galaxy appearance is a typical finding of sarcoidosis
