Prognostic Significance of Fluorine-18 Fluorodeoxyglucose Positron Emission Tomography in Anal Squamous Cell Carcinoma: A Systematic Review and a Meta-Analysis

Figure 4

Funnel plots of three meta-analyses of the current study, including metabolic response to therapy for PFS (a) and OS (b), and SUVmax (c).

(a)

(b)

(c)