: They are often interpreted as Kerley B lines seen "en face" (head-on) rather than from the side, or as general thickening of the fine anastomotic lymphatics.
specific differences between A, B, and C lines in a comparison table? AI can make mistakes, so double-check responses Copy Creating a public link... You can now share this thread with others Good response Bad response 2 sites CardiologyCHAPTER 7 - JaypeeDigital | eBook Reader Q. Write short essay/note on dynamic auscultation. This is a technique of altering circulatory dynamics by means of a variety of p... JaypeeDigital Exam Prep Manual for Medicine Students | PDF - Scribd Q. Write short essay/note on maneuvers useful in differentiating murmurs due to various cardiac diseases. Interventions most commo... Scribd 2 sites CardiologyCHAPTER 7 - JaypeeDigital | eBook Reader Q. Write short essay/note on dynamic auscultation. This is a technique of altering circulatory dynamics by means of a variety of p... JaypeeDigital Exam Prep Manual for Medicine Students | PDF - Scribd Q. Write short essay/note on maneuvers useful in differentiating murmurs due to various cardiac diseases. Interventions most commo... Scribd Show all
are a specific radiographic finding on a chest X-ray that indicates thickening of the pulmonary interstitium. While they are the least frequently discussed of the Kerley line family—which includes A, B, and D lines—their presence is a vital indicator of underlying pathology, most commonly cardiogenic pulmonary edema. Definition and Radiographic Appearance
Kerley C lines represent a reticular pattern of interlobular septal thickening due to interstitial pulmonary edema. While less specific and more subtle than their A and B counterparts, their identification on a plain chest radiograph is a valuable sign of elevated left atrial pressure. Clinicians and radiologists should maintain a high index of suspicion for these lines in patients presenting with dyspnea and known cardiac disease. kerley c line
When looking at a PA (Posterior-Anterior) Chest X-ray, look for the following characteristics:
Some radiologists believe they are simply Kerley B lines viewed "head-on" (en face) rather than in profile.
A is a radiological sign seen on a chest X-ray. It is one of the three types of septal lines (A, B, and C) described by neurologist Peter Kerley. : They are often interpreted as Kerley B
While Kerley B lines are the most commonly recognized, Kerley C lines are often misunderstood or overlooked. They represent the same underlying pathology as B lines but are oriented differently in the lung tissue.
First described by the Irish radiologist Peter Kerley in the 1930s, Kerley lines are linear opacities seen on chest radiographs of patients with pulmonary venous hypertension. While Kerley A lines (long, linear opacities radiating from the hila) and Kerley B lines (short, horizontal lines at the lung bases) are well-documented, Kerley C lines are often overlooked or mischaracterized. Understanding all three patterns is crucial for accurate interpretation of interstitial lung fluid.
The appearance of Kerley C lines usually occurs when pulmonary capillary wedge pressure reaches . Their presence is a hallmark of interstitial thickening caused by fluid, cellular infiltration, or fibrosis. Common causes include: You can now share this thread with others
To identify Kerley C lines, it is essential to distinguish them from the other variants: Appearance Significance Long, unbranching, diagonal Parahilar (upper lobes) Distension of anastomotic lymphatics. B Lines Short, horizontal, parallel Peripheral bases (costophrenic angles) Thickened subpleural interlobular septa. C Lines Reticular, "spider-web" Short/Mesh Central and basal zones Overlapping B lines or diffuse infiltration. D Lines Same as B lines Retrosternal space Best seen on lateral radiographs. Clinical Significance and Etiology
Others describe them as a distinct mesh or "spider web" of opacities resulting from the thickening of anastomotic lymphatics throughout the lung. Comparison of Kerley Lines
Septal lines in lung | Radiology Reference Article - Radiopaedia