Clinical T1 lung cancer; evaluation with FDG-PET
To determine the usefulness of F-18 FDG-PET for small size lesions of lung cancer, 38 clinical T1 patients were semiquantitatively analyzed by standardized uptake ratios (SUR). Using an SUR greater than 2.5 as criteria for malignancy, positive ratios were 87% (33/38) in patients with 3cm or less nodule, 78% (14/18) with 2cm or less, and 75% (3/4) with 1.5cm or less, respectively. Five nodules (13%) showed false negative. FDG-PET seems to be valuable even for evaluation of clinical T1 lung cancer.
Nakayama, J; Hara, M; Miura, N; Sugie, T; Satake, M; Tomita, H; Kitase, M; Ogino, H; Ohba, S; Patz, J
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