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Fig. 1B. 59-year-old man with pulmonary mass. FDG positron emission
tomography image shows increased uptake (arrow) suggestive of
neoplasm. Surgical pathology revealed bronchial cartilaginous hamartoma.
Theoretically, hamartoma should not show increased uptake of FDG. In this
example, when FDG is increased, further diagnosis by biopsy or resection is
warranted.