Table 1.
MR imaging findings of pituitary adenomas
| Adenoma type | Number of cases | Sex (m/f) | Age | T2 signal intensity ratio | Maximum diameter (mm) | WR (%) | EER (%) | DER (%) |
|---|---|---|---|---|---|---|---|---|
| All types | 244 | 133/111 | 55 (± 14) | 1.34 (± 0.33) | 26.8 (± 1.1) | 6.2 (± 21.4) | 107.3 (± 38.8) | 98.7 (± 37.7) |
| GH producing | 55 | 22/33 | 50 (± 13) | 1.09 (± 0.37) | 20.2 (± 9.1) | 9.4 (± 31.4) | 75.2 (± 25.6) | 64.5 (± 22.7) |
| Densely granulated | 31 | 12/19 | 53 (± 12) | 1.06 (± 0.41) | 18.3 (± 9.1) | 11.0 (± 26.8) | 73.9 (± 27.1) | 62.6 (± 21.7) |
| Sparsely granulated | 12 | 5/7 | 40 (± 10) | 1.17 (± 0.33) | 25.8 (± 6.4) | 9.7 (± 40.0) | 84.0 (± 29.4) | 69.9 (± 26.3) |
| non-GH producing | 189 | 103/86 | 57 (± 14) | 1.41 (± 0.29) | 28.8 (± 10.9) | 5.3 (± 17.4) | 116.0 (± 38.0) | 108 (± 36.5) |
| PRL producing | 16 | 8/8 | 40 (± 14) | 1.14 (± 0.22) | 22.7 (± 11.5) | 6.2 (± 19.1) | 117.1 (± 35.1) | 106.2 (± 35.1) |
| Non-functioning | 163 | 93/70 | 59 (± 13) | 1.45 (± 0.27) | 30.3 (± 10.2) | 5.4 (± 16.7) | 116.7 (± 36.6) | 108.7 (± 35.1) |
| ACTH producing | 6 | 0/6 | 47 (± 20) | 1.02 (± 0.22) | 12.2 (± 5.4) | 1.9 (± 25.8) | 94.6 (± 32.2) | 89.2 (± 27.7) |
| TSH producing | 4 | 2/2 | 52 (± 12) | 1.68 (± 0.37) | 16.5 (± 8.1) | 1.7 (± 32.4) | 147.1 (± 46.7) | 142.5 (± 60.1) |
Values are averages and data in parentheses are standard deviations