Pulmonary parenchymal bands

Parenchymal bands are a HRCT finding commonly encountered among patients with asbestosis.

They are typically over 2 cm in length (up to 5cm), 1-3mm thick and runn though the lung parenchyma and usually extend from a visceral pleural surface 6. They are formed in a number of ways 1:

They are thought to reflect pleuroparenchymal fibrosis and is usually associated with distortion of the lung architecture.

Parenchymal bands are encountered in a wide range of pulmonary diseases and represent one of the many end-stage fibrotic findings. To mention a few causes:

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