Detection and prediction of local recurrence of maxillary sinus cancer using F-18 FDG PET/CT

PurposeThe aim of the current study was to investigate the role of F-18 FDG PET/CT in the detection and prediction of local recurrence of maxillary sinus cancer.MethodsRetrospectively, we analyzed F-18 FDG PET/CT images of maxillary sinus cancer patients for the surveillance after treatment. Twenty-two consecutive patients with maxillary sinus cancer, who underwent maxillectomy followed by adjuvant radiation treatment, were included in the study. F-18 FDG PET/CT images were analyzed visually and quantitatively.ResultsThe median age of the patients included in the current study population was 54.5 years (range, 35–78). Seven patients (29.1%) had local recurrent diseases. Recurrent diseases show statistically significant higher values in SUVmax (recurrent: 5.09 ± 3.3, non-recurrent; 3.05 ± 0.7, p < 0.05), L/NL (recurrent: 2.95 ± 0.9, non-recurrent; 1.86 ± 0.5, p < 0.05), L/Ao (recurrent: 3.37 ± 2.1: non-recurrent; 1.88 ± 0.4, p < 0.05), and L/Cbr (recurrent: 1.06 ± 0.7: non-recurrent; 0.46 ± 0.1, p < 0.05) than those of non-recurrent disease of maxillary sinus cancer. There were no statistical differences between visual assessment and quantitative indices for the detection of local recurrence. The visual assessment was the potent predictor by logistic regression analysis for prediction of local recurrence.ConclusionThe visual assessment of F-18 FDG uptake pattern was potential predictor for local recurrence of maxillary sinus cancer. However, the diagnostic performances were similar between visual assessment and quantitative indices. Further studies are needed to confirm these results and improve statistical accuracy.