Septal Lines On Chest X Ray Portable < 2025-2026 >

There are three types, but are the most commonly referenced in everyday reading:

Septal lines, also known as , are radiographic signs seen on a chest X-ray when the interlobular septa—the thin connective tissue separating the lung's functional units—become thickened by fluid, cells, or fibrous tissue . They are most commonly associated with pulmonary edema from heart failure, typically appearing when pulmonary capillary wedge pressure reaches 20–25 mmHg. Types of Septal Lines septal lines on chest x ray

: Fine, reticular (spiderweb-like) lines that are neither central nor peripheral. They are often considered a superposition of many B lines viewed from the front. Common Causes There are three types, but are the most

Cardiac silhouette: Within normal limits. They are often considered a superposition of many

Radiologists categorize these lines based on their location and orientation:

"Lung fields: There are bilateral Kerley B lines, suggestive of interstitial edema. The lungs are otherwise clear.