Comparison of DWI and PET/CT in evaluation of lymph node metastasis in uterine cancer

Figure 1 A 61-year-old woman with endometrial cancer with lymph node metastases in left internal iliac area. A: T2-weighted magnetic resonance imaging shows a small lymph node (LN) in left internal iliac area (arrow); B: The LN seen in (A) shows moderately abnormal signal intensity on diffusion-weighted imaging (DWI) (arrow) suggesting presence of nodal cancer spread; C: Enhanced CT component of positron emission tomography and computed tomography (PET/CT) shows a small LN in left internal iliac area (arrow); D: PET/CT shows that abnormal ¹⁸F-fluorodeoxyglucose uptake corresponds to the LN seen in (C) (arrow), suggesting the presence of nodal cancer spread. Histopathological specimen findings confirmed extensive LN involvement by cancer in the node. Both DWI and PET/CT were true-positive for the node.