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.
a A rapid, prominent reduction of the mediastinal tumor led to the dead space in the mediastinum. The air within the mediastinal tumor represents the dead space caused by tumor necrosis after lenvatinib administration (arrow). b Abdominal CT shows progression of the liver metastases.
