Pulmonary vascular pathology forms an important challenge in daily clinical practice: pulmonary embolism (PE) is a leading cause of cardiovascular mortality in North America and its diagnosis remains one of the most difficult problems facing clinicians. This Monograph provides an informative and authoritative review of pulmonary vascular pathology for the respiratory physician, with chapters covering: diagnostic and therapeutic aspects of PE, imaging, echocardiography, PE and pregnancy, WHO classifications and risk factors, chronic thromboembolic pulmonary hypertension, and much more.