CXR eponyms in pulmonary embolismEponymythology 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 terminologyMike CadoganMarch 6, 2020
Palla signPalla sign (1983) right descending pulmonary artery enlargement and 'sausage-shaped' appearance as a potential sign of pulmonary embolism on chest XRGary ZhangJanuary 4, 2020
Chang signChang sign (1965) Dilated descending pulmonary artery associated with pulmonary infarction and pulmonary hypertension following pulmonary embolism Gary ZhangJanuary 4, 2020
C. H. Joseph ChangC. H. Joseph Chang (1929 - 2017) was an American radiologist. Chang sign (CXR finding in pulmonary embolus) decribed in 1965Gary ZhangJanuary 4, 2019