No abstract available. Article truncated at 150 words. History of Present Illness: The patient is a 70-year-old man with a history of a chronic dry cough for 5 years, who presented to the emergency department with worsening cough and shortness of breath. Two weeks prior to symptom onset, was on trip in the United Kingdom, he developed gastroenteritis which spontaneously resolved. Past Medical History, Social History, and Family History: Old healed TB scar with positive PPD at 17 years of age prior to joining Air Force. No treatment given and patient was asymptomatic from a pulmonary point of view since then; Squamous cell carcinoma of the skin on the scalp, status post excision complicated by osteomyelitis, status post surgical graft fro...