"A scar is a gift"

Sometimes, we panic when we see scars and start thinking of a list of diffenrential diagnoses especially the rare one! But, one of my physican used to calm me down by saying "David, a scar is a gift!"

As in this case with a big thoracotomy scar, one could localize the lesion side by the presence of the scar. Then, you should pay attention to the air entry during auscultation.
a. If air entry is reduced, then think of lobectomy and pneumonectomy.
b. If air entry is equal, then think of decortication and bullectomy.