Dandy W E. Diagnosis, localization and removal of tumors of the third ventricle[J]. Bull Johns Hopkins Hosp, 1922, 33: 188-189. [2]Mathiesen T, Grane P, Lindgren L, et al. Third ventricle colloid cysts:? a consecutive 12-year series[J]. J. Neurosurg, 1997, 86(1):? 5-12. [3]Iacoangeli M, di-Somma L G, Di-Rienzo A, et al. Combined endoscopic transforaminal-transchoroidal approach for the treatment of third ventricle colloid cysts[J]. J Neurosurg, 2014, 120(6): 1471-1476. [4]Staub B N, Rangel-Castilla L, Olar A, et al. Olfactory colloid cyst:? case report and review of extraventricular colloid cyst literature[J]. World Neurosurg, 2014, 81(1):? 202.e19-202.e22. [5]Ho-Fung V, Jaimes C, Pollock A N. Third ventricular colloid cyst[J]. Pediatr Emerg Care, 2011, 27(3): 242-243.