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Table 1 MRI morphological features of OEC versus HGSC

From: MRI for differentiating ovarian endometrioid adenocarcinoma from high-grade serous adenocarcinoma

Morphological features OEC (n = 25) HGSC (n = 139) P value
Laterality^    0.000
 Bilateral 2 (8.7%) 46 (49.5%)
 Unilateral 21 (91.3%) 47 (50.5%)
Shape    0.000
 Round/oval 16 (64.0%) 24 (17.3%)
 Lobulated 6 (24.0%) 26 (18.7%)
 Irregular 3 (12.0%) 89 (64.0%)
Configuration    0.000
 Cystic with mural nodules or papilla 18 (72.0%) 26 (18.7%)
 Mixed cystic-solid 5 (20.0%) 43 (31.0%)
 Solid 2 (8.0%) 70 (50.3%)
SI of solid component on T1WI    0.343
 Iso-/hypointense 24 (96.0%) 121 (87.1%)  
 Mainly iso- with hyperintense 1 (4.0%) 18 (12.9%)  
SI of solid component on T2WI    0.576
 Isointense 3 (12.0%) 9 (6.5%)  
 Heterogeneous hyperintense 22 (88.0%) 130 (93.5%)  
SI of cystic component on T1WI    0.000
 Homogeneous hypointense 4 (17.4%) 46 (66.7%)  
 Homogeneous iso-/hyperintense 19 (82.6%) 3 (4.3%)  
 Mainly hypo- with iso-/hyperintense 0 20 (29.0%)  
SI of cystic component on T2WI    0.751
 Homogeneous hyperintense 18 (78.3%) 58 (84.1%)  
 Mixed signal* 5 (21.7%) 11 (15.9%)  
Enhancement    0.011
 Moderate 13 (52.0%) 37 (26.6%)
 Marked 12 (48.0%) 102 (73.4%)
Ascites^    0.002
 None or mild 21 (91.3%) 53 (57.0%)  
 Moderate or severe 2 (8.7%) 40 (43.0%)  
SPC^ 10 (43.5%) 4 (4.3%) 0.000
  1. SI: signal intensity; *Mixed signal means that two or more signals within the tumors. ^ numbers for 23 patients with OEC and 93 patients with HGSC.