====== Quadrigeminal cistern ====== {{ ::interpeduncularcistern.jpg|}} The superior cistern (cistern of great cerebral vein, [[quadrigeminal cistern]]) is a dilation as a subarachnoid cistern of the subarachnoid space between the [[splenium]] of the corpus callosum and the superior surface of the [[cerebellum]]; it extends between the layers of the [[tela choroidea]] of the [[third ventricle]] and contains the [[great cerebral vein]] and the [[pineal gland]]. Synonyms Other synonyms are cistern of great cerebral vein, quadrigeminal cistern, Bichat's canal, and Bichat's foramen. see also [[Quadrigeminal cistern cyst]]. The criteria for [[cerebellar hemorrhage treatment]] with surgery remain controversial, and many researchers have determined that a hematoma larger than 3 cm, obstruction of the [[quadrigeminal cistern]], and compression of the [[fourth ventricle]] are surgical criteria ((Cohen ZR, Ram Z, Knoller N, Peles E, Hadani M. Management and outcome of non-traumatic cerebellar haemorrhage. Cerebrovasc Dis. 2002;14(3-4):207-13. PubMed PMID: 12403953. )) ((Kirollos RW, Tyagi AK, Ross SA, van Hille PT, Marks PV. Management of spontaneous cerebellar hematomas: a prospective treatment protocol. Neurosurgery. 2001 Dec;49(6):1378-86; discussion 1386-7. PubMed PMID: 11846937. )) ((Salvati M, Cervoni L, Raco A, Delfini R. Spontaneous cerebellar hemorrhage: clinical remarks on 50 cases. Surg Neurol. 2001 Mar;55(3):156-61; discussion 161. PubMed PMID: 11311913. )).