Ground glass pulmonary nodules: their significance in oncology patients and the role of computer tomography and 18F-fluorodeoxyglucose positron emission tomography

European Journal of Hybrid Imaging
Laura EvangelistaPaolo Sartori

Abstract

to determine the clinical significance of ground glass pulmonary nodules, either pure (GGNs) or mixed with the presence of solid component (MPNs), in patients with known pulmonary or extra-thoracic malignancies and to evaluate the role of computed tomography (CT) and positron emission tomography (PET)/CT in their diagnosis and follow-up. A total of 130 nodules in 68 patients were revealed: 119 GGNs and 11 MPNs. GGN lesions were found in 58 patients, MPNs in eight, and in two cases, both. The median diameter of the nodules was 7 mm (3-30 mm). Moreover, 27 patients, who had a pars-solid >5 mm in the GGN or a pure GGN with a diameter > 5 mm, underwent FDG PET/CT. The median follow-up with CT was >3 years. The comparison between the first and the last positive CT scan showed that GGNs and/or MPNs remained unchanged for a median period of 18 months (range 11-48 months) in 53 patients, they disappeared after a median of 3.5 months (range 2-11 months) in 12 and increased in diameter after a median period of 17 months (range 12-67 months) in 3. In particular of these latter patients, two had malignant lesions. Only three patients with a single nodule showed a significant uptake of FDG at PET/CT. in the evaluation of GGNs and MNPs, CT e...Continue Reading

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