Serial stereotaxic biopsies.
D000236:Adenoma / Q000175:diagnosis; D000238:Adenoma, Chromophobe / Q000175:diagnosis; D001254:Astrocytoma / Q000175:diagnosis; D001707:Biopsy, Needle / Q000379:methods*; D001932:Brain Neoplasms / Q000175:diagnosis*; D004806:Ependymoma / Q000175:diagnosis; D006801:Humans; D010911:Pituitary Neoplasms / Q000175:diagnosis*; D013238:Stereotaxic Techniques