Indentation in the border of a solid lung mass (thought to represent a nutrient/feeding vessel) and is suggestive of a bronchial carcinoma.
The sign is not pathognomonic of bronchial carcinoma being observed in other conditions, such as granulomatous infections. The sign as a differentiating utility is limited.
History of the Rigler notch sign
- Leo George Rigler (1896-1979)
- Rigler LG, Heitzman ER. Planigraphy in the differential diagnosis of the pulmonary nodule, with particular reference to the notch sign of malignancy. Radiology. 1955 Nov;65(5): 692-702.
- Rigler LG. A roentgen study of the evolution of carcinoma of the lung. J Thorac Surg. 1957 Sep; 34(3): 283-297
Eponymous term review
- Gaillard F. Rigler notch sign (lungs). Radiopaedia
the names behind the name