Table 2.
Differences of qualitative MR image features between pituitary adenoma and Rathke cleft cyst in the training group.
| Qualitative MR image features | Pituitary adenoma, N (%) (n = 68) | Rathke cleft cyst, N (%) (n = 40) | p value (<0.01)∗ |
|---|---|---|---|
| Flow voids | |||
| Presence | 3 (4) | 2 (5) | 0.866 |
| Absence | 65 (96) | 38 (95) | (Fisher's exact tests) |
| Signal intensity on the contrast-enhanced images | |||
| Hypointense or isointense | 3 (4) | 30 (75) | <0.001 |
| Hyperintense | 65 (96) | 10 (25) | (chi-square tests) |
| Heterogeneity on the contrast-enhanced images | |||
| Homogenous | 34 (50) | 25 (62.5) | 0.208 |
| Heterogeneous | 34 (50) | 15 (37.5) | (chi-square tests) |
| Signal intensity on T2WI | |||
| Hypointense or isointense | 35 (64) | 14 (40) | 0.028 |
| Hyperintense | 20 (36) | 21 (60) | (chi-square tests) |
| Heterogeneity on T2WI | |||
| Homogenous | 27 (49) | 20 (57) | 0.456 |
| Heterogeneous | 28 (51) | 15 (43) | (chi-square tests) |
MR, magnetic resonance; T2WI, T2-weighted image. ∗Correction adjusted level of significance p=0.01.