Lung lobulation due to abdominal and thoracic organ arrangement and lateralization
Lung lobulation due to abdominal and thoracic organ arrangement and lateralization
Lung lobulation based on: (A) Normal (situs solitus) arrangement of abdominal and thoracic organs with a trilobar right lung and bilobar left lung. (B) Inverse (solitus inversus) with a mirror image of the normal arrangement of abdominal and thoracic organs. (C) Abnormal lateralization (solitus ambiguus) with right isomerism: Bilateral right lung with three lobes each, symmetrical liver, and absent spleen. (D) Abnormal lateralization (solitus ambiguus) with left isomerism: Bilateral left lungs with two lobes each, symmetrical liver, right-sided stomach, and polysplenia.