CTICasesDiffuse large B-cell lymphoma
Imaging findings
Chest CT shows asymmetric, nodular thickening along the bronchovascular bundles and fissures, necrotic mediastinal/hilar masses, and subpleural consolidation with preserved bronchovascular structures (angiogram sign) traversing the tumor.
Key takeaways
Secondary pulmonary involvement in diffuse large B-cell lymphoma can mimic sarcoidosis or lymphangitic carcinomatosis due to a perilymphatic distribution. Key differentiating features include asymmetry, necrotic nodal masses, and preservation of pulmonary vessels traversing the consolidated lung (angiogram sign).
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