emphysema blunt density elevation eventration scoliosis degenera calcifi hyperinflation bronchospasm asthma hernia copd interstitial markings plaque osteophytosis aortic disease bronchiolitis airways disease thickening cephalization aspiration bullae hyperinflat contusion atherosclero osteopenia metastasis granuloma pneumomediastinum pneumoperitoneum osteodystrophy cuffing irregular lucency inflam fissure hypertension prominen kyphosis defib hyperexpansion bullet reticula thoracentesis bronchitis volume loss deformity hemorrhage hematoma radiopaque aerophagia arthropathy tracheostomy