Diagnosis:
Suggested by MRI and confirmed by pathology (brain biopsy/resection)
Clinical features:
- Hypopituitarism, visual field cuts,
- Chemical meningitis on rupture
Findings on Investigations:
Usually suprasellar. The following features may occur: Cysts. Calcified (rim or nodular). Enhancement (solid or nodular).
CT: Calcied rim. Enhancing nodule. Hypodense cysts
MRI:
- T1: variable intensity cysts
- T2: usually hyperintense
- PD: hyperintense.
Pathology:
Histology:
- Pseudostratified columnar cells, squamous cells rimmed by basaloid cells. Palisading. Keratin nests. Calcifications. Foreign body giant cells.
Treatment:
Surgical resection