Table 4.
Cranial sites of disease involvement, detectable on PET, MRI, or both for 41 patients
| PET or MRI | PET and MRI | PET only | MRI only | |
|---|---|---|---|---|
| N total (% patients) | N total (% patients) | N total (% patients) | N total (% patients) | |
| Intracranial | 24 (59%) | |||
| Cerebral hemispheres | 11 (26%) | 3 (7%) | 1 (2%) | 7 (17%) |
| Cerebellum | 11 (26%) | 3 (7%) | 1 (2%) | 7 (17%) |
| Dura | 7 (17%) | 3 (7%) | 0 (0%) | 4 (10%) |
| Hypothalamus/pituitary/infundibulum | 13 (32%) | 4 (10%) | 2 (4%) | 7 (17%) |
| Pseudo-meningioma | 2 (4%) | 0 (0%) | 1 (2%) | 1 (2%) |
| Brainstem | 13 (32%) | 5 (12%) | 1 (2%) | 7 (17%) |
| Corpus callosum | 1 (2%) | 0 (0%) | 0 (0%) | 1 (2%) |
| Craniofacial | 22 (54%) | |||
| Orbital | 10 (24%) | 4 (10%) | 0 (0%) | 6 (14%) |
| Paranasal sinus | 11 (24%) | 8 (20%) | 0 (0%) | 3 (7%) |
| Lacrimal gland | 3 (7%) | 0 (0%) | 0 (0%) | 3 (7%) |
| Skull base or mandible | 12 (29%) | 0 (0%) | 0 (0%) | 12 (29%) |
| Calvarium involvment | 17 (41%) | 0 (0%) | 0 (0%) | 17 (41%) |
| Total lesions | 111 | 30 | 6 | 75 |