Pathology tram track appearance refers to parallel thickening and splitting of the glomerular capillary basement membrane due to subendothelial deposition of immune complexes mesangial matrix and neutrophilic debris between the glomerular basement membrane and the vascular endothelium causing a double contour by light microscopy a classic. The dilated airway lies adjacent to a pulmonary artery branch giving the appearance of a ring varicose.
This describes airways viewed in a transverse plane.
Tram track appearance meaning. Information and translations of tram track in the most comprehensive dictionary definitions resource on the web. The tram track appearance was the best mri finding for distinguishing between pcl mucoid degeneration and pcl tears in this small series. Tram track appearance in mammography usg indicates duct ectasia.
Meaning of tram track. The term s meaning evolved during its history. What does tram track mean.
It should not be confused with other tram track signs elsewhere in the body. Bone a descriptor for the split cortical thickening with parallel neo osteogenesis or endosteal splitting seen in infarctions of long bones in sickle cell anaemia. Implies non uniform bronchial dilatation.
Large osteophytes were projected from the anteromedial aspect of the tibial articular margin. Tram track appearance redirected from tramline appearance a descriptive term for parallel curved lines radiopacities or radiolucencies of varying length. When found in the lungs tram tracks are radiologic signs that are usually accompanied by pulmonary edema in cases of congestive heart failure and bronchiectasis.
The tram track lesion began from the neck of the talus and tapered at the posterior part of the anterior half of the dome. Tram track sign in the brain refers to the parallel calcification of the cortex in patients with sturge weber syndrome 1. It should not be confused with other tram track signs elsewhere in the body.
Saracen was a term widely used among christian writers in europe during the middle ages to refer to arabs and muslims. Tram track sign chest tram track sign may be used in chest radiography or ct to denote the thickened non tapering parallel walls of cylindrical bronchiectasis. They were beak like in appearance and were located at the corresponding region of the tram track lesions.
Tram tracks are caused by bronchial wall thickening and can be detected on a lateral chest x ray. This description applies to dilated airways seen in a horizontal orientation. Analogous to intrameniscal cysts which are isointense to fluid in only 8 4 of the cases 12 the majority of pcl intrasubstance signal intensity particularly in our tram track pcl group was not fluid signal intensity.
Cylindrical tram track sign.