CTICasesBenign Pulmonary Lymphatic Malformation
Imaging findings
CT chest followed over 10 years shows stable, water-attenuation subpleural nodules and localized septal thickening along the diaphragmatic surface of the left lower lobe, without vascular shunting or mass effect.
Key takeaways
Localized pulmonary lymphatic malformations (lymphangiomatosis) are rare, benign developmental anomalies of the lymphatic system. They present on CT as cystic or low-attenuation (fluid-density) subpleural masses and septal thickening. They are stable over decades and require no intervention when asymptomatic.
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