Kerley b lines

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Passive hyperaemia of the of the lungs caused by mitral stenosis or heart failure gives remarkable and very varied x-ray appearances. A severe attack of hyperaemia always leaves permanent radiologic evidence behind it…the shadows of perivascular lymphatics persist as fine, sharp lines, most marked at the bases and near the hila. They are of three types. A Lines several inches long, rather ragged and radiating from the hilum. They do not bifurcate and they do not follow the normal branching pattern of bronchi and vessels. B Short, sharp lines seen only at the bases, usually less than an inch long and running transversely out to touch the pleural margin. C Fine interlacing lines giving the network appearance.

Kerley b lines

At the time the article was last revised Joachim Feger had no financial relationships to ineligible companies to disclose. Septal lines , or Kerley lines , are seen when the interlobular septa in the pulmonary interstitium become prominent. It may be because of lymphatic engorgement or edema of the connective tissues of the interlobular septa. They usually occur when pulmonary capillary wedge pressure reaches mmHg. They represent the thickening of the interlobular septa that contain lymphatic connections between the perivenous and broncho-arterial lymphatics deep within the lung parenchyma. On chest radiographs, they are seen to cross normal vascular markings and extend radially from the hilum to the upper lobes. Kerley A lines are less frequent than Kerley B and C lines and are usually not seen in the absence of the other two. These are thin lines cm in length in the periphery of the lung s. They are perpendicular to the pleural surface and extend out to it. They represent thickened subpleural interlobular septa and are usually seen at the lung bases. Kerley C lines are short lines which do not reach the pleura unlike B or D lines and do not course radially away from the hila unlike A lines. Kerley D lines are the same as Kerley B lines, except they are seen on lateral chest radiographs in the retrosternal air gap 3.

These are longer at least 2cm and up to 6cm unbranching lines coursing diagonally from the hila out to the periphery of the lungs. They represent the thickening of the interlobular septa that contain lymphatic connections between the perivenous and broncho-arterial lymphatics deep within the lung parenchyma, kerley b lines.

Kerley lines are a sign seen on chest radiographs with interstitial pulmonary edema. They are thin linear pulmonary opacities caused by fluid or cellular infiltration into the interstitium of the lungs. They are named after Irish neurologist and radiologist Peter Kerley. They are suggestive for the diagnosis of congestive heart failure , but are also seen in various non-cardiac conditions such as pulmonary fibrosis , interstitial deposition of heavy metal particles or carcinomatosis of the lung. Chronic Kerley B lines may be caused by fibrosis or hemosiderin deposition caused by recurrent pulmonary edema. These are longer at least 2cm and up to 6cm unbranching lines coursing diagonally from the hila out to the periphery of the lungs. They are caused by distension of anastomotic channels between peripheral and central lymphatics of the lungs.

Passive hyperaemia of the of the lungs caused by mitral stenosis or heart failure gives remarkable and very varied x-ray appearances. A severe attack of hyperaemia always leaves permanent radiologic evidence behind it…the shadows of perivascular lymphatics persist as fine, sharp lines, most marked at the bases and near the hila. They are of three types. A Lines several inches long, rather ragged and radiating from the hilum. They do not bifurcate and they do not follow the normal branching pattern of bronchi and vessels. B Short, sharp lines seen only at the bases, usually less than an inch long and running transversely out to touch the pleural margin.

Kerley b lines

Fine interstitial lines at both bases, greater on the right consistent with interlobular septal thickening. Kerley B lines thickened interlobular septa are much spoken about as a medical student, but less commonly observed than one might expect given the volume of cardiac failure patients. These thin lines of cm are virtually always at the lungs bases and at the lung periphery lying perpendicular to the pleural surface to which they contact.

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They are short, fine lines throughout the lungs, with a reticular appearance. Related Radiopaedia articles. Case 2 Case 2. Radiologic signs. Please Note: You can also scroll through stacks with your mouse wheel or the keyboard arrow keys. Uncategorized uncategorized. They represent the thickening of the interlobular septa that contain lymphatic connections between the perivenous and broncho-arterial lymphatics deep within the lung parenchyma. They may be seen in any zone but are most frequently observed at the lung bases at the costophrenic angles on the PA radiograph, and in the substernal region on lateral radiographs. Download as PDF Printable version. Reed JC. Read Edit View history. In case of sale of your personal information, you may opt out by using the link Do not sell my personal information. Toggle limited content width. Analytics analytics.

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View Joachim Feger's current disclosures. Case 2 Case 2. Promoted articles advertising. Radiologic sign. Log in Sign up. Out of these cookies, the cookies that are categorized as necessary are stored on your browser as they are essential for the working of basic functionalities of the website. Close Please Note: You can also scroll through stacks with your mouse wheel or the keyboard arrow keys. They are short, fine lines throughout the lungs, with a reticular appearance. They are of three types. Updating… Please wait. Performance performance.