Erratum to: Angiomyolipoma being surgically excised for presumed kidney carcinoma.

Materials and methods From 2008 to 2014, AML was pathologically confirmed in 38 patients who underwent The online version of the original article can be found under doi:10.1007/s11255-015-0996-y. * Zhigang Ji jizg1129@163.com 1 Department of Urology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, 1#, Shuaifuyuan, Dongcheng District, Beijing 100730, People’s Republic of China 228 Int Urol Nephrol (2016) 48:227–228 1 3 Table 1 Comparison of misdiagnosed AML group and its matched RCC control group Parameter All patients (n = 76) AMLs (n = 38) RCCs (n = 38) P Sex 1 Male 34 17 17 Female 42 21 21 Tumor size (cm) 0.930 Mean ± SD 3.14 ± 1.68 3.12 ± 1.68 3.16 ± 1.70 Range 0.9–9.6 0.9–9.4 0.9–9.6 Age (years) 0.001 Mean ± SD 52.54 ± 12.41 48.11 ± 12.92 56.97 ± 10.23 Range 20–80 20–74 31–80 Laterality 0.818 Left 39 19 20 Right 37 19 18 Presentation 1 Incidental 6 3 3 Symptomatic 70 35 35 Ultrasonography 0.526 Hypoechoic 50 24 26 Isoechoic 10 4 6 Hyperechoic 11 7 4 Fat content on CT 0.077 Yes 3 3 0 No 73 35 38 Nephrectomy type 1 Radical 16 8 8 Partial 60 30 30 Surgical approach 0.238 Open 29 17 12 Laparoscopy 47 21 26