Parenchymal bands are a HRCT finding. They can be commonly encountered among patients with asbestosis. They are typically over 2 cm in length (up to 5 cm), 1-3 mm thick and run through the lung parenchyma and usually extend from a visceral pleural surface. They are formed in a number of ways. They are thought to reflect pleuroparenchymal fibrosis and are usually associated with distortion of the lung architecture. To mention a few causes: Asbestosis - found in 60% of patients. Sarcoidosis Silicosis Systemic lupus erythematosus Pulmonary fibrosis Ankylosing spondylitis Sequelae of ARDS Infections including pulmonary paracoccidioidomycosis.

Check with the Chest physician with reports