CTICasesPulmonary Infarction
Imaging findings
CT of the chest in a patient with cardiomyopathy and DVT demonstrates multiple pleural-based, wedge-shaped consolidations with central areas of low enhancement and disordered aeration in the lower lobes. Serial follow-up CTs show progressive shrinkage and resolution of these lesions over several weeks, leaving only small linear scars.
Key takeaways
Pulmonary infarction is a common complication of acute pulmonary embolism, presenting as peripheral, wedge-shaped consolidation (Hampton's hump). On CT, the classic signs include a central area of low attenuation (necrosis or hemorrhage) with surrounding pleural-based consolidation. In patients with pre-existing heart failure, elevated venous pressures increase the likelihood of infarction, which characteristically 'melts' away over time on follow-up imaging.
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