ct scan of the chest (HRCT)


Most useful diagnostically, Histologic section

Explains HRCT appearance

  • Broad range of lung diseases
  • Especially interstitial disease

Anatomy - Secondary Lobule

Core structures

  • Axial interstitium
  • Bronchiole
  • Pulmonary artery
  • Lymphatics

• Septal structures

  • Peripheral interstitium
  • Pulmonary veins
  • Lymphatics

• Parenchyma

  • Alveolar interstitium
  • Alveoli
  • Pulmonary capillary bed


Septal pattern on HRCT and gross specimen

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