- Westermark sign (hyperlucent area due to oligemia)
- Hampton hump (wedge shaped opacity)
- Fleishner sign (enlarged pulmonary artery)
- Palla’s sign ( dilated right descending pulmonary artery)
- Knuckle or sausage sign
- Melting sign
- Elevated hemidiaphragm
- McConnell’s sign (Echocardiography- hypokinesis of right ventricular free wall)
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