Multicentric SDHD-related PGL syndrome (2 HNPGL, 2 PHEO, and 4 extra-adrenal PGL). A. Fused axial 18F-FDG PET/CT images centered over the tumours (6 positive tumours, arrows). B. Matching axial 18F-FDOPA PET/CT images show 2 positive tumours (arrows). Missed tumours on 18F-FDOPA PET/CT were located as follows: 9 mm left PHEO, 26 mm interaortocaval, 17 mm lateral caval, 6 mm iliac bifurcation.