A 42-year-old male presents with a two-hour history of left-…

A 42-year-old male presents with a two-hour history of left-sided chest pain. He denies any trauma to the chest; the pain began suddenly and is worsened by taking a deep breath. On examination, his RR is 40/min and he has decreased breath sounds on the left side. Which of the following conditions is the most likely cause of his chest pain?

A 64-year-old female presents with complaint of chronic prod…

A 64-year-old female presents with complaint of chronic productive cough for the last 4 months. She states that she has had periods of similar symptoms over the past several years, which typically last for 3-4 months. She has a 40-pack-year history of cigarette use. The patient denies any fevers, reporting only occasional shortness of breath and a persistent cough where she frequently expectorates thick, white sputum. Vital signs are as follows: T 98.6F,  HR 88/min, BP 136/88, RR 18/min, O2 sat 94% (room air). Physical exam is significant for bilateral end-expiratory wheezes, a blue tint to the patient’s lips and mucous membranes of the mouth, and a barrel chest. Which of the following conditions is the most likely diagnosis for this patient?