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.
Ultrasound image depicting a large, heterogeneous, hyperechoic mass with regions of mineralization and a cavitary anechoic cystic structure at the level of the left kidney, extending caudal to the 17th and 18th left thoracic ribs. The maximum size of the kidney visualized in this section is 12.9 × 17.4 cm.
