Hampton’s Hump and Palla’s Sign in Pulmonary Embolism

A 33-year-old female smoker came to our emergency department complaining of dyspnea, pleuritic left chest pain, and an episode of mild hemoptysis. One week previously, she had experienced left calf pain. There was no history of recent trauma or immobilization. Her only medication was an oral contraceptive. On admission, her heart rate was 110 beats per minute in sinus rhythm, with a normal physical examination and arterial blood gases and without evidence of right ventricular strain on ECG (Figure 1). A chest …