showed a trendP = 0.16
Among the conventionally high-risk patients as defined by age, stage, histology, and MYCN status ( n = 30) [ 23 , 24 ], PET-UHR ( n = 22) showed a trend of worse 5-year EFS (12% [2%–31%] vs . 38% [6%–72%]; P = 0.16) and OS (24% [6%–47%] vs . 50% [1%–91%]; P = 0.07).