My husband has some minor linear atelectasis in the left lingula with slight dependant atelectasis at the lung base also mild right hilar lymphadenop?

Needs evaluation: The presence of linear opacities with hilar adenopathy can be due to several acute or chronic conditions such as histoplasmosis, atypical mycobacterial infections, sarcoidosis, or rarely malignancy etc. Your husband should immediately see a lung specialist for a complete evaluation to determine the underlying cause, which will help determine appropriate course of treatment.