CTICasesSynchronous Lung Cancer and Pulmonary Hamartoma
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Imaging findings
A smoker presented with an ugly, necrotic lung cancer. Adjacent to it was a pulmonary hamartoma or mesenchymal tumor, characterized by macroscopic fat and chunky calcium. PET imaging demonstrated typical FDG non-avidity in the hamartoma, appearing photopenic, while the adjacent tumor was hypermetabolic.
Key takeaways
This case illustrates the distinct imaging characteristics of a benign pulmonary hamartoma, including macroscopic fat and calcification, and its typical non-avidity on FDG PET, even when located immediately adjacent to a hypermetabolic lung cancer.
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