Rigler notch sign

The Rigler notch sign refers to an indentation in the border of a solid lung mass, which is thought to represents a feeding vessel, thus suggesting the presence of a bronchial carcinoma1. However, this sign is also observed in other conditions, including granulomatous infections, and its differentiating utility is therefore limited.

Practical points

The Rigler notch sign should not be confused with the Rigler sign on abdominal x-rays, which is indicative of pneumoperitoneum, Rigler triad, or Hoffman-Rigler sign.

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Article information

rID: 30632
System: Chest
Section: Signs
Tag: rigler
Synonyms or Alternate Spellings:
  • Rigler's notch sign

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