Carcinoma, Renal Cell/secondary; Carcinoma, Renal Cell/therapy; Cerebral Hemorrhage/therapy; Kidney Neoplasms/therapy; Pituitary Neoplasms/secondary; Pituitary Neoplasms/therapy; Carcinoma, Renal Cell/blood supply; Carcinoma, Renal Cell/diagnosis; Carcinoma, Renal Cell/pathology; Cerebral Angiography; Cerebral Hemorrhage/diagnosis; Cerebral Hemorrhage/pathology; Diagnosis, Differential; Embolization, Therapeutic; Endoscopy; Humans; Hypophysectomy; Image Enhancement; Image Interpretation, Computer-Assisted; Kidney Neoplasms/blood supply; Kidney Neoplasms/diagnosis; Kidney Neoplasms/pathology; Magnetic Resonance Imaging; Male; Middle Aged; Neoplasm, Residual/blood supply; Neoplasm, Residual/diagnosis; Neoplasm, Residual/pathology; Neoplasm, Residual/therapy; Nephrectomy; Pituitary Neoplasms/blood supply; Pituitary Neoplasms/diagnosis; Pituitary Neoplasms/pathology; Radiosurgery; Tomography, X-Ray Computed