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A 62-year-old smoker with no significant past medical history presents to the emergency room with progressive shortness of breath, cough, and a 25-pound weight loss over the past three months. Vitals were taken with blood pressure 150/90, heart rate 72, respiratory rate 20 and oxygen saturation 98% on room air. A CT was ordered and pictured below. A prior screening CT from two years ago was normal. What is the most likely cause of this patient’s symptoms?  

What are treatment options a doctor might consider for a patient confirmed to have coronavirus (SARS-CoV-2)? A. If a patient is too sick, hospitalization ensures supportive treatment and monitoring. B. If the patient is not too sick, the individual can be sent home under self-isolation, wearing a face mask. Anti-fever medication make the patient more comfortable.  

Identify the structure at the tip of the arrow.  

Within hours after birth, a baby, whose mother is diabetic, had a rising respiratory rate and labored breathing. The baby became cyanotic and died. Postmortem histologic examination revealed collapsed alveoli lined with eosinophilic material. Which of the following is the most likely diagnosis?

A 16-year-old girl with shortness of breath and cough is seen in the emergency room. She has been sick for four days and is gradually feeling more short of breath. She has a history of seasonal allergies but has never been short of breath. On physical examination, she is afebrile. Her blood pressure is 100/70. Her heart rate is 98. Her respiratory rate is 24. On auscultation of the lungs, the physician hears a continuous expiratory sound. This is most likely which of the following sounds?

The pleuropericardial membranes give rise in part to the fibrous pericardium and the mediastinal pleura. What structures are located between these two structures?

Based on the pulmonary function tests, what is the most likely diagnosis?  

The respiratory diverticulum (lung bud) develops as an outgrowth from the ventral wall of the foregut. As a result, the cartilaginous, muscular, and connective tissue components of the trachea and lungs are derived from what source?

A 10-day old infant presents to his pediatrician for a regularly scheduled well-child check with increased work of breathing and respiratory distress. On physical exam, the infant was found to have decreased breath sounds on one side of his chest. His physician ordered a chest x-ray that showed a congenital diaphragmatic hernia. What side of the chest was most likely found to have reduced breath sounds, and what is the embryologic origin of the tissues that failed to form correctly in this infant in-utero?

A 65-year-old man undergoes lung cancer screening. What Lung-RADS category would he receive?