CTICasesPulmonary Edema with "Karst Mountain" Appearance
Imaging findings
Chest CT demonstrates diffuse interlobular septal thickening and bilateral ground-glass opacities. A distinctive gravitational or lobular gradient of ground-glass opacity is visible, forming small, peaked, upward-pointing triangles resembling Chinese landscape "Karst mountain" paintings.
Key takeaways
The "Karst mountain" appearance on chest CT represents a specific lobular and sublobular fluid gradient seen in pulmonary edema, including hydrostatic edema and re-expansion pulmonary edema. Recognizing this pattern of gravity-dependent, peaked lobular opacity helps distinguish edema from atypical infections or other interstitial processes.
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