Table 1.
Magnetic resonance imaging types.
| MR Imaging Type | S-GCT | Bifocal GCT | BG-GCT | Total |
|---|---|---|---|---|
| Type Ia | 3 ++ | 2 + | 0 | 5 |
| Type Ib | 4 + | 2 + | 0 | 6 |
| Type II | 7 ** | 1 | 0 | 8 |
| Type III | 6 ** | 0 | 2 (L) ++ | 8 |
| Type IV | 1 (L) + | 11 (7 L ++; 4 N +++) | 0 | 12 |
| Type V | 1 | 0 | 2 ++ | 3 |
| Total | 22 | 16 | 4 |
Type Ia: Globular anterior III ventricle mass lesion with identifiable pituitary stalk (PS) and pituitary gland (PG). Type Ib: Globular anterior III ventricle mass lesion without identifiable PS but with identifiable PG. Type II: Globular anterior III ventricle mass extending to the sella turcica. Type III: Globular mass extending from the floor of III ventricle to sella turcica. Type IV: Small laminar (L) or nodular (N) lesion at the floor extending to upper PS. Type V: limited to PS. Each asterisk (*) represents one patient with cavernous sinus involvement; each cross (+) represents one patient with ventricular metastases. Multiple asterisks or crosses represent multiple patients.