tramtrack appearance

tramtrack appearance

Tramline calcification Radiology A descriptive term for parallel, curved lines, radiopacities or radiolucencies of varying length Bone A descriptor for the split cortical thickening with parallel neo-osteogenesis or endosteal splitting, seen in infarctions of long bones in sickle cell anemia  Lung A descriptor for the parallel, thickened bronchial walls seen on a plain CXR in bronchiectasis. Cf Railroad track, Ring shadow.
McGraw-Hill Concise Dictionary of Modern Medicine. © 2002 by The McGraw-Hill Companies, Inc.