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MR imaging findings
| Finding | No. (%) |
|---|---|
| Enlargement of pituitary gland | 12 (60.0) |
| Gadolinium-enhanced MR imaging (n = 20) | |
| Enlargement of pituitary stalk | 20 (100) |
| Hypoenhancing lesions in the pituitary gland | 19 (95.0) |
| High intensity on T2WI | 1/19 (5.3) |
| Isointensity on T2WI | 7/19 (36.8) |
| Low intensity on T2WI | 11/19 (57.9) |
| Shape of hypoenhancing lesion (n = 19) | |
| Linear | 8 (42.1) |
| Nodular | 4 (21.1) |
| Ring-shaped | 1 (5.3) |
| Irregular | 6 (31.6) |
