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) Chest X‐ray revealed a mass in the upper mediastinum. (B) contrast‐enhanced CT revealed a 3‐cm solid lesion with a smooth surface and poor contrast effect slightly excluding the right wall of the trachea, but there was no tendency to infiltrate the surrounding tissue. (C) This case had an azygos lobe near the tumour. (D) 18F‐fluorodeoxyglucose positron emission tomography (FDG‐PET) showed a slight uptake in the tumour
