Case discussion the tram tack sign seen on this chest x ray denoted thickened non tapered walls of the cylindrical bronchiectasis. A ct is much more accurate than a chest x ray both in discriminating the normal structures in the chest and can also find abnormalities that are too small to be seen on a chest x ray.
Computerized tomography ct scan uses x ray to make detailed pictures of your lungs as it scans the entire chest area.
Tram lines chest x ray. 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 tram tracks are caused by bronchial wall thickening and can be detected on a lateral chest x ray. What was seen on the chest x ray it is nothing but the tram line appearance unable to spot it here comes the modified image. 13 other x ray interpretation chapter 16 section iii 637 discoverradiology ch16 pp612 645 fix indd 637 13 07 11 9 25 am these normal images are provided for your use as reference images so you can familiarize yourself with what lateral the normal looks like.
Reticular net like shadowing and parallel tram lines indicating bronchiectasis a typical feature of cystic fibrosis the. Tram track sign may be used in chest radiography or ct to denote the thickened non tapering parallel walls of cylindrical bronchiectasis. This tube known as a portacath lies entirely under the skin.
Are there any lines or tubes in the chest wall. Tram track sign annotated in a 65 year old male with diagnosed bronchiectasis secondary to dilated bronchi within both lower lobes. Please see disclaimer on my website.
Features of bronchiectasis on chest x ray as well as on ct scan chest. The portacath device is used for long term delivery of intravenous drugs. The line enters the subclavian vein just below the clavicle.
The term tram tracks is also used to describe the basement membrane duplication found on light microscopy. The video will describe bronchiectasis as seen on chest x ray. The black arrows points towards tram line and the white to shadows which will be discussed below.
Chest x rays are not required to make the diagnosis but are helpful to monitor progression of the disease and to look for complications such as pneumonia. Chest x ray devices and artifacts tutorial portacath for cystic. Now compare the previous x ray with the one above here are few examples of tram line shadows.
It should not be confused with other tram track signs elsewhere in the body.