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Plot of individual studies and pooled prevalence of patients with focal colorectal incidental uptake detected by 18F-FDG-PET or PET/CT, including 95% confidence intervals (95%CI). Prevalence of patients with focal colorectal incidental uptake ranged from 0.4% to 16.3%, with pooled estimate of 3.6% (95%CI: 2.6–4.7%). The included studies were statistically heterogeneous (I-square: > 75%).
