Table 3 Conventional MR features of ovarian tumors
From: The value of dynamic contrast–enhanced MRI in characterizing complex ovarian tumors
MR features | Benign (n = 15) | borderline (n = 16) | malignant (n = 71) | P |
|---|---|---|---|---|
Maximal diameters (cm) | 8.8 ± 3.9 | 10.1 ± 5.0 | 9.9 ± 4.0 | 0.531a |
Bilateral | 0 (0) | 6 (38%) | 25 (35%) | 0.021b |
Shape | ||||
Round/oval | 13 (87%) | 11 (69%) | 28 (39%) | 0.001b |
Lobulated/irregular | 2 (13%) | 5 (31%) | 43 (61%) | |
Boundary | ||||
Clear | 15 (100%) | 13 (81%) | 38 (54%) | 0.001b |
Obscure | 0 (0) | 3 (19%) | 33 (46%) | |
Mass configuration | ||||
Mainly cystic | 0 (0) | 9 (56%) | 25 (35%) | 0.009b |
Mixed cystic and solid | 2 (13%) | 1 (6%) | 13 (18%) | |
Mainly solid | 13 (87%) | 6 (38%) | 33 (47%) | |
SI on T2-weighted imaging | ||||
Hyperintensity | 10 (67%) | 13 (81%) | 59 (83%) | 0.345b |
Iso-/hypointensity | 5 (33%) | 3 (19%) | 12 (17%) | |
Ascites/pelvic fluid | 10 (67%) | 8 (50%) | 42 (59%) | 0.638b |
Peritoneal implants/lymph nodes | 0 (0) | 3 (19%) | 28 (39%) | 0.006b |