Dear friend, welcome and thanks for entrusting your query here at HCM!
I am Dr. Prasad Akole (Critical Care Expert- http://bit.ly/Dr-Prasad-Akole) and am glad to address to your query here.
Your CT scan
shows enlarged (swollen) draining lymph nodes around the wind and food pipes in the chest. They are not calcified (hardened with calcium) nor decaying.
They may be enlarged due to various causes like infection, TB, some blood cancers, lymphomas etc.
Please give details of symptoms, reports, any consultations here to enable me to give a definite advice.
You could ask a question to me on this website and upload all reports, scans, Xrays etc.
Be guided by your chest physician and get evaluated.
A lymph node biopsy
from an accessible site is usually advised.
Seriousness depends on the cause. Most are treatable. Do not neglect.
I hope you are fully satisfied with the guidance I gave.
Hope I have answered all your questions. I would be glad to answer any further queries. Please ask for
any clarifications before closing and rating this answer.
Thank you and Good luck!