Pulmonary amyloidosis

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Overview

 * Amyloidosis limited to the respiratory tract is uncommon.
 * Pulmonary amyloidosis occurs in three histopathologic types
 * Focal deposits in the tracheobronchial tree
 * Diffuse parenchymal opacities
 * Single or multiple pulmonary nodules.
 * Nodular pulmonary amyloidosis is usually found incidentally on chest nadiognaphs in asymptomatic, older adults.
 * The deposits originate in the muscular walls of small blood vessels, and as they enlarge, they spread into the interstitial tissues.

Chest x-ray

 * Nodular pulmonary amyloidosis
 * Nodules of pulmonary amyloidosis are usually 1-4 cm in size
 * They may enlarge, calcify, ossify, or cavitate.

Images shown below are courtesy of RadsWiki and copylefted

CT

 * Nodular pulmonary amyloidosis
 * Nodules of pulmonary amyloidosis are usually 1-4 cm in size
 * They may enlarge, calcify, ossify, or cavitate.

Images shown below are courtesy of RadsWiki and copylefted