Explore the case of a 4-year-old girl with cough and Fever. Her Chest X-Ray shows a unique, round lesion. What is the most likely diagnosis?
A previously healthy 4-year-old girl presented to the emergency department with a 3-day history of dry cough and fever. On physical examination, intercostal retractions and decreased breath sounds over the left lung were observed. A chest radiograph is shown. What is the most likely diagnosis?