Fig. 2.

A 64-year-old woman with local recurrence after the surgery of endometrial cancer. a Axial post-contrast T1-weighted fat-saturated MR image shows heterogeneously enhanced mass at the left post-operative stump site (arrow), suspect of local recurrence. b Axial fused PET/MR image demonstrates intense FDG uptake of the heterogeneously enhanced mass at the left post-operative stump site (arrow), suggesting local recurrence. c Axial PET/ceCT image reveals focal FDG uptake of the vagina (arrow), suspect of local recurrence. d Axial PET/ldCT image shows focal FDG uptake of the vagina (arrow). However, local recurrence was not suspected due to no abnormal findings by ldCT (not shown). e Axial diffusion weighted MR image shows abnormal intensity of the vagina (arrow). f Axial PET image reveals abnormal FDG uptake at the vagina (arrow). b Fused PET/MRI, a contrast-enhanced MRI, and b PET/ceCT demonstrated true-positive findings of local recurrence, however, d PET/ldCT showed false-negative finding