Recurrent pulmonary embolism as a cause of chronic heart disease was probably first recognized by Ljungdahl 8 in 1928. Brenner, 9 in his systematic studies of the pulmonary vasculature in 1935 ...

THE diagnosis of massive pulmonary embolism is frequently difficult and always uncertain, primarily because the symptoms and signs may mimic those of some other diseases, such as myocardial ...

In rare cases of pulmonary embolism, ... (Palla sign), an abrupt cutoff of vessels, elevated hemidiaphragm along with focal pulmonary oligemia (Westermark sign), and peripheral, pleural-based, ...