The authors present a microsurgical technique for the resection of a heterogeneous group of @entity979 and discuss the key points for successfully performing this surgery. Twenty-six consecutive @entity1 with @entity979 were resected by the senior author (H.B.) and analyzed retrospectively. For all 26 @entity1 , the operation was conducted using the infratentorial supracerebellar (ITSC) approach in the sitting (23 @entity1 ) or Concorde (three @entity1 ) positions. Twenty-five @entity1 had symptomatic obstructive @entity1276 and were treated with ventricular drainage, a previously inserted ventriculoperitoneal shunt, or an endoscopic third ventriculostomy before undergoing resection of the @entity979 . The gross total @entity5 was achieved in 23 @entity1 and subtotal removal was achieved in three @entity1 . The @entity5 were pathologically diagnosed mainly as @entity979 (10), @entity816 (6), or pineal cysts (4). Twenty-five of the @entity1 clinically improved after surgery, and there was no mortality. Two @entity1 experienced @entity16 : one @entity1 developed @entity1319 , and one @entity1 developed intermittent @entity892 . Successful surgery and @entity1 outcome when treating @entity5 of the pineal region using the ITSC approach requires: (i) preservation of the venous flow of the Galenic draining system; (ii) preservation of the thick bridging veins of the tentorial surface of the cerebellum, especially the hemispheric bridging veins; and (iii) minimizing retraction of the cerebellum during surgery to avoid adverse effects caused by both @entity76 and disturbance of the venous circulation.

Neurosurgical venous considerations for XXXX of the pineal region resected using the infratentorial supracerebellar approach.

@entity1 :: ('9606', 'Species') :: ['patients', 'patient'] @entity1276 :: ('MESH:D006849', 'Disease') :: ['hydrocephalus'] @entity979 :: ('MESH:D010871', 'Disease') :: ['pineal-region tumors', 'pineocytomas', 'pineal-region tumor'] @entity5 :: ('MESH:D009369', 'Disease') :: ['removal of the tumor', 'tumors'] @entity16 :: ('MESH:D009422', 'Disease') :: ['transient postoperative neurological deterioration'] @entity816 :: ('MESH:D001254', 'Disease') :: ['pilocytic astrocytomas'] @entity76 :: ('MESH:D002526', 'Disease') :: ['direct cerebellar compression'] @entity892 :: ('MESH:D004172', 'Disease') :: ['diplopia'] @entity1319 :: ('MESH:D015835', 'Disease') :: ['Parinaud syndrome']
@entity5 :: (MESH:D009369,Disease) :: ['tumors']
