Interstitial pulmonary edema

Case contributed by Arwa Ahmed Albareda
Diagnosis almost certain

Presentation

Dyspnea and cough on background of CRF and hemodialysis

Patient Data

Age: 30 years
Gender: Male

Bilateral pleural effusions larger on the left, spreading through the left oblique fissure.

Bilateral smooth thickening of the interlobular septa.

Thickened peribronchovascular interstitium.

B lines

ultrasound

Numerous B lines perpendicular to the pleural surface.

Case Discussion

Interstitial pulmonary edema can be demonstrated by ultrasound. Thickening of the interlobular septa causes linear reverberation artefact perpendicular to the chest wall.

CT demonstrates thickened bronchial walls due to interstitial edema.

Pulmonary edema is due to accumulation of fluid in the extravascular compartments of the lung and interstitial edema precedes alveolar edema.

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