| MR finding | Group 1 (n = 7) | Group 2 (n = 16) | Group 3 (n = 22) | ||
| Maximum diameter (mm) (mean ± SD) | 5.1 ± 4.2
(3-15) | 23.6 ± 19.7
(8-94) | 9.8 ± 6.1
(2-30) | ||
| Shape | Papillary | 0 | 11 | 9 | |
| Rounded | 7 | 5 | 13 | ||
| Signal intensity of cyst contents | T1-weighted image | Hyperintense | 1 | 0 | 1 |
| Isointense | 0 | 0 | 0 | ||
| Hypointense | 6 | 16 | 21 | ||
| T2-weighted image | Hyperintense | 0 | 14 | 9 | |
| Isointense | 0 | 0 | 0 | ||
| Hypointense | 7 | 2 | 13 | ||
| Attached angle of mural nodules to cyst wall (degree, mean ± SD) | mean ± SD | 106.4 ± 26.4
(47.9-138.8) | 80.9 ± 24.7
(37.8-122) | 77.2 ± 34.8
(24.0-146.6) | |
| Obtuse (>90 degrees) | 6 | 5 | 9 | ||
| Acute (<90 degrees) | 1 | 11 | 13 | ||
| Contrast enhancement on subtraction image | 0 | 16 | 22 | ||