Radiographic features of the peripheral reticular pattern

What are the radiographic features of the peripheral reticular pattern?

The peripheral reticular pattern has two distinguishing features:

  • • Small size of the holes (typically <5 mm) seen within a network of fine crisscrossing linear opacities
  • • Peripheral and basilar distribution of the network

The network typically is seen filling the costophrenic angles on frontal and lateral chest radiographs


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