These cases based upon this lecture of prof. Dr. Mamdouh Mahfouz
https://youtu.be/SDFm-8WGWF4
https://youtu.be/pihEfhr-weU
Full chest series :
Diagnostic Radiology in English- part 2- ( DRE ) Chest Module: https://www.youtube.com/playlist?list=PLF8XZxHGFioF36PnFkweMZ11I5DhcfGrY