CTICasesInterstitial Lung Edema with Fluid in Interlobar Fissures
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Imaging findings
Frontal chest radiograph demonstrates conspicuous septal lines, including Kerley B lines in the bases and longer Kerley A lines. The lateral projection further reveals subpleural interstitial edema clearly related to the interlobar fissures, with actual fluid accumulation within the fissures themselves.
Key takeaways
This case provides an excellent illustration of interstitial lung edema, highlighting classic radiographic signs such as prominent septal (Kerley A and B) lines. Crucially, it demonstrates the progression from subpleural interstitial edema to the accumulation of free fluid directly within the interlobar fissures, a distinct manifestation of severe interstitial edema.
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