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Increased Pulmonary Line Markings

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CLINICAL DIAGNOSTIC MANUAL



Increased pulmonary line markings on a chest X-ray indicate greater visibility of linear structures in the lung, such as interlobular septa and bronchial walls.


This finding can result from various pathologies causing thickening, inflammation, or fibrosis of lung tissue. Identifying the underlying cause is essential for appropriate patient management, as some conditions may have a chronic and progressive course.


Pathology

Clinical Symptoms and Signs

Suspected Diagnosis

Confirmatory Diagnosis

Pulmonary fibrosis

Progressive dyspnoea, dry cough, fatigue, crackles on auscultation

History of chronic respiratory symptoms

Chest X-ray, high-resolution CT, pulmonary function tests, lung biopsy

Interstitial fluid

Dyspnoea, orthopnoea, peripheral oedema, crackles on auscultation

History of heart failure, symptoms of congestion

Chest X-ray, chest CT, echocardiogram, arterial blood gas analysis

Lymphangitic carcinomatosis

Progressive dyspnoea, cough, haemoptysis, weight loss, symptoms of primary cancer

History of known cancer, respiratory symptoms

Chest X-ray, chest CT, lung biopsy, PET scan

Bronchiectasis

Chronic productive cough, purulent sputum, haemoptysis, recurrent respiratory infections

History of recurrent respiratory infections, chronic symptoms

Chest X-ray, high-resolution chest CT, pulmonary function tests, bronchoscopy


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