A 69-Year-Old Man With Chronic Cough and Recurrent Pneumonia

CASE PRESENTATION: A 69-year-old man consulted for a 3-day history of fever, wet cough, and yellow-green phlegm. He denied having any dyspnea, chest pain, hemoptysis, swallowing disorders, choke, chills, asthenia, anorexia, or weight loss. He reported a continuous dry cough and three episodes of pneumonia in the past 4 years. He was a nonsmoker, without any other personal or familial medical history. He had no known professional exposure. He was born and lived in Vietnam but had no known contact with TB in his family or workplace. He was never imprisoned or homeless and did never travel abroad.