Knuckle sign (pulmonary embolism)
Knuckle sign
(pulmonary embolism) • Knuckle sign - pulmonary embolism - Ganzer Fall bei Radiopaedia
The knuckle sign refers to the abrupt tapering or cutoff of a pulmonary artery secondary to an embolus. It is better visualized on CT pulmonary angiography (CTPA) than chest x-ray. This is an important ancillary finding in pulmonary embolism (PE), and often associated with the Fleischner sign of dilated central pulmonary arteries.
It is one of several described signs of pulmonary embolus on chest radiographs.
See also
Siehe auch:
- Lungenarterienembolie
- Westermark-Zeichen
- Hampton hump
- pulmonale Hypertonie
- Palla sign
- Fleischner sign
- Röntgenzeichen bei Lungenembolie
- Fleischner sign of tuberculosis
und weiter:
Assoziationen und Differentialdiagnosen zu Knuckle sign (pulmonary embolism):
