Occult pulmonary embolism: a common occurrence in deep venous thrombosis.

  title={Occult pulmonary embolism: a common occurrence in deep venous thrombosis.},
  author={Gary S. Dorfman and John Joseph Cronan and T B Tupper and Richard N. Messersmith and Donald F. Denny and Carol H. Lee},
  journal={AJR. American journal of roentgenology},
  volume={148 2},
Ventilation-perfusion scans were used in a prospective study to determine the prevalence of occult pulmonary embolus in proven deep venous thrombosis. Fifty-eight patients without symptoms of pulmonary embolism, but with venographically proven deep venous thrombosis, were subjected to chest radiographs, 99mTc macroaggregated-albumin perfusion scans, and 133Xe ventilation scans. Of the 49 patients with deep venous thrombosis proximal to the calf veins, 17 (35%) had high-probability scans. Of all… CONTINUE READING

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