Kerley Lines ((full)) Jun 2026

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In conclusion, Kerley lines are a radiological finding that can aid in the diagnosis and monitoring of interstitial lung disease. A thorough clinical evaluation, combined with imaging studies, is essential to determine the underlying cause of Kerley lines and guide management.

: In heart failure, Kerley B lines appear when pulmonary capillary wedge pressure rises above 20–25 mmHg, reflecting chronic or subacute interstitial edema.

The primary mechanisms leading to the appearance of Kerley lines include: kerley lines

Septal lines in lung | Radiology Reference Article | Radiopaedia.org

Kerley lines serve as a vital window into the interstitial health of the lung. Whether caused by the hydrostatic pressure of heart failure or the infiltrative burden of malignancy, these lines signal a disruption in the delicate balance of pulmonary fluid dynamics. While medical technology has evolved, the ability to recognize Kerley A, B, and C lines on a standard chest radiograph remains a fundamental skill for physicians, enabling prompt diagnosis and management of potentially life-threatening cardiopulmonary conditions.

While Kerley B lines are a hallmark of pulmonary edema, their presence is not pathognomonic for heart failure. A broad differential diagnosis must be considered: include: In conclusion, Kerley lines are a radiological

The chest radiograph remains a cornerstone diagnostic tool in the assessment of respiratory and cardiac distress. Among the various signs utilized to diagnose pulmonary pathology, Kerley lines are a specific indicator of interlobular septal thickening. These lines are not primary disease entities but rather a radiographic symptom of underlying physiological disruptions, primarily involving the pulmonary lymphatic system and interstitial fluid dynamics. Understanding the distinction between the three types of Kerley lines (A, B, and C) is essential for clinicians in differentiating between cardiogenic pulmonary edema, viral pneumonia, and neoplastic infiltration.

In the era of advanced imaging, the utility of the plain chest radiograph remains high due to its accessibility and low cost. Identifying Kerley lines allows for the rapid triage of patients presenting with dyspnea.

Peter Kerley originally distinguished between "A," "B," and "C" lines based on their anatomical location and radiographic appearance. The primary mechanisms leading to the appearance of

Kerley lines are short, horizontal lines at the lung periphery, seen on chest radiographs, representing interstitial edema or fibrosis.

Radiologists categorize these lines into three main types—A, B, and C—based on their location, length, and orientation.