Multiple bouts "showers" of pulmonary thromboemboli lodging in the small branches of the pulmonary artery cause
A. primary pulmonary hypertension
B. secondary hypertension
C. pulmonary emphysema
D. pulmonary edema
E. Wegener's granulomatosis
B
Occlusion of small branches of the pulmonary artery with thromboemboli is a cause of secondary pulmonary hypertension. Primary pulmonary hypertension is a disease of unknown etiology. Pulmonary thromboemboli occluding small blood vessels do not cause pulmonary edema, emphysema, or Wegener's granulomatosis.
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