TO REVIEW THE ROLE OF PET/CT IN THE EVALUATION OF LUNG METASTASES IN THE COLORECTAL CANCER PATIENTS
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Abstract
Objective: To review the role of PET/CT in the evaluation of lung metastases in the colorectal cancer patients who had had undergone curative treatment. Material and methods: 39 patients (18 colon cancer and 21 rectal cancer) who had undergone curative treatment with pulmonary nodules were evaluated by contrast CT and PET/CT (with 18F-FDG ) at Hanoi Oncology Hospital from October 2019 to May 2020. A retrospective and prospective descriptive study. Results: The average age of patients in the study was 60,1 ± 13,3. 38,5% of patients had normal CEA levels. PET/CT detected more positive lesions than CT (48 vs 39). Most of the cases of lung metastasis in the study group had metastases with many small nodules, SUVmax values were not high. The average size of pulmonary lesions was 1,0 ± 1,5 cm. The overall value of SUVmax of the group was 3,19 ± 2,23. PET/CT has sensitivity (95,7%) and specificity (62,5%) in evaluating pulmonary nodules. Conclusion: PET/CT detected more positive pulmonary lesions than CT with diagnostic sensitivity and specificity of 95,7% and 62,5%. However, with high positive predictive value, low cost and ease of implementation, CT remains useful in clinical practice.
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Keywords
PET/CT, colorectal cancer, lung metastasis
References
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