Pulmonary Arterial Webs

PULMONARY angiograms performed serially are useful in defining the natural history of pulmonary thromboemboli.1 We recently encountered a patient suspected of having acute pulmonary thromboembolism in whom the initial angiogram revealed large intra-arterial filling defects. A similar study fifteen months later showed weblike deformities at exact sites of previously demonstrated lesions. We believe these webs constitute a new angiographic sign of antecedent pulmonary thromboembolism.Case ReportA 74-year-old woman entered the hospital in April, 1964, because of the abrupt onset of dyspnea 4 days earlier. One month previously the left calf had transiently become painful, red and tender. Three days . . .