PSME3 and Lesch-Nyhan syndrome: In the non-metastatic LNS group (N = 56), the ranges of long diameter and short diameter, SUVmax, LN-SUVmax/PT-SUVmax, Ki, and Ki/K1, were 1.30 cm [1.18;1.50], 1.00 cm [0.90;1.10], 3.50 [2.78;4.63], 0.45 [0.28;4.63], 0.012 [0.009;00016] ml/g/min, and 0.056 [0.0248;0.146], respectively.