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Table 2 MR imaging characteristics between endometrial stromal sarcomas (ESS) and T2-hyperintense leiomyomas

From: Utility of diffusion-weighted and contrast-enhanced magnetic resonance imaging in diagnosing and differentiating between high- and low-grade uterine endometrial stromal sarcoma

Parameters ESS T2-hyperintense leiomyoma P value
n 20 16  
Tumor size (cm) 9.68 ± 3.59 11.66 ± 4.45 0.265
ADC value (× 10− 3 mm2/sec) 1025.61 ± 130.31 1348.19 ± 162.15 <  0.001 *
Margin    0.014 *
 Well-defined 12 (60.0) 16 (100.0)  
 Ill-defined 8 (40.0) 0 (0.0)  
Worm-like nodules 8 (40.0) 0 (0.0) 0.014 *
Marginal nodules 14 (70.0) 0 (0.0) <  0.001 *
Intratumoral nodules 16 (80.0) 7 (43.8) 0.057
T2 hypointense bands 20 (100.0) 1 (6.3) <  0.001 *
Feather-like enhancement 10 (50.0) 0 (0.0) 0.003 *
Necrosis 13 (65.0) 1 (6.3) 0.001 *
Hemorrhage 14 (70.0) 2 (12.5) 0.002 *
Tumor enhancement    0.001 *
 Less than myometrium 15 (75.0) 5 (31.3)  
 Equal to myometrium 1 (5.0) 10 (62.5)  
 Greater than myometrium 4 (20.0) 1 (6.3)  
  1. Data in parentheses are percentages
  2. *Statistically significant