CXR eponyms in pulmonary embolism
Eponymythology associated with chest X-ray signs in pulmonary embolus and pulmonary infarction. We review related eponyms, the person behind their origin, their relevance today, and modern terminology
Tag Chang sign
Palla sign
Palla sign (1983) right descending pulmonary artery enlargement and 'sausage-shaped' appearance as a potential sign of pulmonary embolism on chest XR
Chang sign
Chang sign (1965) Dilated descending pulmonary artery associated with pulmonary infarction and pulmonary hypertension following pulmonary embolism
C. H. Joseph Chang
C. H. Joseph Chang (1929 - 2017) was an American radiologist. Chang sign (CXR finding in pulmonary embolus) decribed in 1965