A 43-Year-Old Man With Rapidly Respiratory Failure and Spontaneous Massive Hemothorax.

A 43-year-old man urgently was referred to the hospital complaining of rapidly worsening dyspnea and right-side chest wall discomfort for 1 hour. Two hours later, he experienced acute respiratory failure that subsequently required intubation and invasive mechanical ventilation, thus he was transferred to ICU. He had no fever, weight loss, or bleeding tendency. He was previously healthy with no history of trauma and was not currently on any medication.