Table 3. The Comparison of Clinical and Conventional MRI Characteristics between BEOTs and MEOTs.
| Characteristics | BEOT (n = 30) | MEOT (n = 58) | ICC/k* | P |
|---|---|---|---|---|
| Age, years† | 46 (28.0–60.3) | 52 (46.0–57.3) | 0.175 | |
| Ca-125, U/mL† | 30.09 (17.07–55.60) | 176.80 (36.22–1041.50) | < 0.001 | |
| Morphology (%) | 0.878 | 0.457 | ||
| Lobulated | 17/30 (56.7) | 39/58 (67.2) | ||
| Round/oval | 13/30 (43.3) | 19/58 (32.8) | ||
| Configuration (%) | 0.945 | 0.003 | ||
| Purely cystic | 1/30 (3.3) | 0 | ||
| Predominantly cystic | 22/30 (73.3) | 22/58 (37.9) | ||
| Mixed cystic/solid | 4/30 (13.3) | 18/58 (31.0) | ||
| Predominantly solid or solid | 3/30 (10.0) | 18/58 (31.0) | ||
| Maximum diameter of lesions, cm‡ | 15.87 ± 7.67 | 12.22 ± 5.40 | 0.861 | 0.101 |
| Maximum diameter of solid component, cm‡ | 2.42 ± 3.68 | 5.27 ± 2.67 | 0.839 | < 0.001 |
| Thickened irregular septa (%) | 15/30 (50.0) | 40/58 (69.0) | 0.823 | 0.082 |
| Number of loculi (%) | 0.895 | 0.127 | ||
| Unilocular | 6/30 (20.0) | 8/58 (13.8) | ||
| Multilocular | 19/30 (63.3) | 45/58 (77.6) | ||
| Honeycomb loculi | 5/30 (16.7) | 3/58 (5.2) | ||
| SI of cystic component on FS-T1WI (%) | 0.927 | 0.439 | ||
| Moderate to low | 24/30 (80.0) | 44/58(75.9) | ||
| High | 5/30 (16.7) | 12/58(20.7) | ||
| SI of cystic component on T2WI (%) | 0.943 | 0.578 | ||
| Low | 1/30 (3.3) | 3/58 (5.2) | ||
| Moderate to high | 28/30 (93.3) | 53/58 (91.4) | ||
| Enhancement (%) | 0.865 | 0.691 | ||
| Mild | 6/30 (20.0) | 8/58 (13.8) | ||
| Moderate | 7/30 (23.3) | 17/58 (29.3) | ||
| Significant | 17/30 (56.7) | 33/58 (56.9) | ||
| Hemorrhagic fluid in the loculi (%) | 4/30 (13.3) | 9/58 (15.5) | 0.915 | 0.527 |
| Ascites (%) | 0.871 | 0.983 | ||
| No/mild | 11/30 (36.7) | 22/58 (37.9) | ||
| Moderate | 15/30 (50.0) | 29/58 (50.0) | ||
| Massive | 4/30 (13.3) | 7/58 (12.1) |
*Consistency of assessment was evaluated by ICC unless otherwise indicated, †Abnormally distributed numerical data were presented as the median (interquartile range), ‡Normally distributed numerical data were presented as the mean ± standard deviation. Consistency of assessment was evaluated by k. BEOT = borderline epithelial ovarian tumor, CA-125 = cancer antigen-125, FS = fat-suppressed, ICC = intra-class correlation coefficients, k = Cohen's kappa statistics, MEOT = malignant epithelial ovarian tumor, SI = signal intensity