Skip to main content

Table 1 Baseline characteristics and outcomes of patients with renal angiomyolipomas

From: Treatment of renal angiomyolipoma: pooled analysis of individual patient data

Variables Overall Conservative treatment Cryoablation Embolisation Radiofrequency ablation Partial nephrectomy/ enucleation Nephrectomy P-value
No. of patients 441 32 19 128 6 163 93  
Age (years) 51.5 ± 14.5 53.2 ± 15.0 53.6 ± 14.8 47.9 ± 14.7 60.4 ± 6.9 52.9 ± 13.7 52.4 ± 14.9 0.020
Females 353 (80.4) 24 (75.0) 18 (94.7) 103 (80.5) 5 (80) 129 (79.6) 74 (79.6) 0.494
Imaging method         <0.0001
 US 9 (9.4) 3 (9.4) 0 2 (1.6) 0 2 (1.2) 2 (2.2)  
 CT 411 (93.6) 26 (81.3) 8 (42.1) 125 (97.7) 6 (100) 160 (98.2) 86 (94.5)  
 MRI 8 (1.8) 3 (9.4) 0 1 (0.8) 0 1 (0.6) 3 (3.3)  
 CT/MRI 11 (2.5) 0 11 (57.9) 0 0 0 0  
Tumour diameter (cm) 6.5 ± 5.0 4.4 ± 5.1 2.6 ± 1.6 9.1 ± 4.8 3.9 ± 2.5 4.7 ± 4.1 7.6 ± 6.0 <0.0001
Bleeding 54 (12.2) 4 (12.5) 0 32 (25.0) 0 7 (4.3) 10 (10.8) <0.0001
3-year survival 97.9 % 100 % 94.7 % 100 % 100 % 95.6 % 98.4 % 0.037
Reintervention 41 (9.4) 1 (3.1) 0 38 (29.7) 0 2 (1.2) 0 <0.0001
 Surgery 18 (4.1) 0 0 17 (13.3) 0 0 0 <0.0001
3-year freedom from reintervention 87.8 % 96.9 % 100 % 63.5 % 100 % 98.2 % 100 % <0.0001
  1. Data were obtained from the overall series, based on treatment strategy. Nominal variables are reported as counts and proportions; continuous variable are reported as mean and standard deviation