Review Question - QID 212626

A 32-year-old man presents to the emergency department because he coughed up copious amounts of bloody sputum at work. He also says that he has had multiple lung infections over the last 2 years. Furthermore, he says that during the episodes, he coughs up a lot of foul smelling sputum. Past medical history is significant for childhood allergies and absence seizures. He has smoked 1 pack per day for 10 years and drinks socially. A computed tomography scan of this patient shows the section seen in Figure A. Which of the following diseases would cause the most likely etiology of this patient's recurrent infections?