The gold standard for the diagnosis of pulmonary embolism is pulmonary arteriography with a sensitivity and specificity of 95-98%. The direct signs of pulmonary arteriography show contrast filling and defects in the pulmonary arteries, with or without orbital signs of blood flow blockage. Pulmonary embolism is clinically rare, and the main clinical signs are chest pain, hemoptysis, and dyspnea. Once diagnosed, pulmonary embolism requires prompt treatment, which varies according to the size of the embolism. If the embolism is large, thrombolytic therapy should be given promptly. If the embolism is low-risk and not very large, conservative treatment can be taken.