CTICasesPulmonary Hamartoma
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Imaging findings
A nodule in the right lower lung was incidentally noted on a liver MRI. The nodule showed medium to high signal on in-phase sequence and signal dropout on out-of-phase sequence, indicative of fat content. A non-contrast CT confirmed the presence of macroscopic fat within the lesion.
Key takeaways
Pulmonary hamartomas are benign lung tumors characterized by the presence of fat. They can be incidentally detected on imaging and their fatty composition can be confirmed by signal dropout on out-of-phase MRI sequences or by macroscopic fat on CT.
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