TABLE 1.
Patient Characteristics
| Factor | N (%) |
|---|---|
| Female sex | 46 (45%) |
| Median age, yr (IQR) | 49 (37-59) |
| Median maximum tumor diameter, mm (IQR) | 20 (17-28) |
| History of prior resection | 100 (98%) |
| Pre-SRS anterior pituitary deficit | 20 (20%) |
| Baseline acromegaly laboratory studies | |
| GH, ng/mL (IQR) | 4.7 (1.88-9.58) |
| IGF-1, ng/mL (IQR) | 552 (189-1244) |
| IGF-1ia, scale (IQR) | 1.66 (1.37-3.22) |
| IGF-1i ≥ 2.25 | 31 (30%) |
| Total post-SRS endocrine and radiographic | 63 (29-100) |
| follow-up, mo (IQR) |
GH, growth hormone; IGF-1, insulin-like growth factor-1; IQR, interquartile range; SRS, stereotactic radiosurgery.
aIGF-1i is defined as patient laboratory value divided by their age- and sex-adjusted upper limit of normal.