A 30 year old male with no PMH reports shortness of breath s…
A 30 year old male with no PMH reports shortness of breath since 1 hour ago. Patient reports the onset was sudden and started while he was walking to his car from the store. Patient denies tobacco use, fever, chills, nasal congestion, cough, chest pain, abdominal pain, nausea, vomiting, diarrhea or leg swelling. On exam, patient appears tall and thin, in mild respiratory distress and tachypneic, but speaking full sentences. Trachea midline. Chest expansion is symmetric, anterior:lat diameter is 2:1. On auscultation, decreased lung sounds on Lt side, the rest of the lungs with no wheezing, rales or rhonchi. S1 and S2 with no murmurs, rubs or gallops. No leg edema. VS: BP: 145/95 sitting Rt arm; HR: 105 bpm; R: 22 breath per minute; T: 98.6F oral; Pulse Ox: 92% on Room Air. Please provide differential diagnosis for this presentation (list at least 5) AND what imaging would be indicated for this case.