Lung fissures

Dr Craig Hacking and Dr Henry Knipe et al.

Lung fissures are a double-fold of visceral pleura that either completely or incompletely invaginates lung parenchyma to form the lung lobes. 

Each lung has an oblique fissure separating the upper lobes from the lower lobes and the right lung has a horizontal fissure that separates the right upper lobe from the right middle lobe

There are numerous accessory fissures that are common anatomical variants. 

Chest x-ray
Thoracic anatomy
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Article information

rID: 22241
System: Chest
Section: Anatomy
Synonyms or Alternate Spellings:
  • Pulmonary fissures
  • Pulmonary fissure
  • Lung fissure
  • Fissures of the lung
  • Fissures of the lungs

Cases and figures

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    Figure 1
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    Case 1: normal appearance on chest CT
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