No abstract available. Article truncated after 150 words. History of Present Illness: A 42-year-old woman presented to the emergency department with chest pain and dyspnea. The onset of symptoms was acute, initially endorsing left-sided sharp chest pain which then progressed with dyspnea. Chest radiograph was read as normal. Laboratory evaluation was notable for an elevated D-Dimer which prompted a thoracic CT scan to be obtained. Past Medical History, Family History, Social History: She had well-controlled rheumatoid arthritis (on no medical therapy) and was diagnosed with emphysema by her PCP two years earlier. Her mother died from pulmonary embolism secondary to underlying lung cancer. She quit smoking 2 years ago with a total of 20-pack...