CTICasesPulmonary Infarction / Hampton's Hump
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Imaging findings
Chest radiographs show a peripheral, rounded, humped opacity in the lower lung zone pointing toward the hilum. CT of the chest confirms acute pulmonary embolism with an associated non-enhancing, subpleural, rounded opacity that contains internal areas of spared, air-rated lung, characteristic of a hemorrhagic pulmonary infarction.
Key takeaways
While classic medical literature describes a pulmonary infarct (Hampton's hump) as a wedge-shaped subpleural opacity, in clinical practice they are often rounded or humped, with a convex apex pointing toward the hilum. The presence of central air-rated lung within a non-enhancing subpleural consolidation on CT is a highly specific sign of incomplete pulmonary infarction.
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