signet ring sign is seen in bronchiectasis

• related: chest imaging
• tags: #permanent
• source: radiopaedia

dilated bronchus with smaller pulmonary artery on cross section looks like a ring.

Links to this note

• chest imaging
  • signet ring sign is seen in bronchiectasis
• bronchiectasis image finding includes permanent airway dilation and lack of tapering
  • airway equal or larger than artery (signet ring sign is seen in bronchiectasis), ratio of greater than 1.5