<prompt> Which of the following radiological sign will be present in a young lady with symptoms suggestive of pulmonary embolism?Hamptons humpWestermark signFleischner signAll of the above  <response>: Pulmonary infarction may occur if the pulmonary venous pressure is elevated or the bronchial aerial supply to a region is deficient. The cone-shaped area of pulmonary infarction has been called a Hamptons hump. An area of radiolucency, corresponding to diminished pulmonary vascularity distal to a pulmonary embolism, is occasionally seen and is called the Westermark sign. There may also be an increase in the size of the pulmonary aery proximal to a large central pulmonary embolus Fleischner sign. Ref: Chiles C., Gulla S.M. 2011. Chapter 4. Radiology of the Chest. In M.Y. Chen, T.L. Pope, D.J. Ott Eds, Basic Radiology, 2e. 