Table 1.
Indications for initial pituitary MRI performed in 2598 patients from 1999 to 2009
| Indications | n |
|---|---|
| Follow-up of known massesa | 924 |
| Follow-up of nonpituitary tumors | 4 |
| Suspected mass | |
| Prolactinoma | 455 |
| ACTH adenoma | 349 |
| Nonfunctioning adenoma/mass | 103 |
| GH adenoma | 39 |
| TSH adenoma | 20 |
| Metastases to pituitary | 18 |
| FSH/LH functioning adenoma | 11 |
| Sarcoidosis | 2 |
| Endocrinological work-up | |
| Hypogonadism | 247 |
| Hypopituitarism | 128 |
| GH deficiency | 41 |
| Hypothyroidism | 34 |
| Adrenal insufficiency | 32 |
| Diabetes insipidus | 18 |
| MEN1 syndrome | 17 |
| Postpartum | 8 |
| SIADH | 6 |
| Neurological symptoms | |
| Headache | 75 |
| Visual loss/blurring | 24 |
| Bitemporal hemianopsia | 15 |
| Altered mental status | 5 |
| Syncope | 5 |
| Homonymous hemianopsia | 5 |
| Diplopia | 3 |
| Seizure | 3 |
| Trauma | 3 |
| CVA/TIA | 2 |
| Meningitis | 1 |
| Cranial neuropathy (III, IV, VI) | 1 |
| Total | 2598 |
MEN1, Multiple endocrine neoplasia 1; SIADH, syndrome of inappropriate antidiuretic hormone; CVA, cerebrovacular accident; TIA, transient ischemic attack.
a
Includes incidentalomas discovered on prior x-rays, CT, or MRI scans and undiagnosed masses.