BACKGROUND: Sellar/suprasellar cystic lesions can cause compression of the optic pathways and result in a decline in vision. There have been reports of optic pathways being fenestrated by @entity438 . This is the first report of a sellar/suprasellar @entity145 causing fenestration of an optic nerve. CASE DESCRIPTION: Our @entity1 presented with an 8-month history of worsening vision. Imaging revealed a sellar/suprasellar cystic lesion with compression of the optic pathways. He was treated surgically via an endoscopic transsphenoidal approach. The left optic nerve was found to have multiple round defects during surgery. Pathology was consistent with an @entity145 . The @entity1 has had progressive improvement in vision up to 6 months after surgery. CONCLUSIONS: Sellar/suprasellar @entity145 likely form when a communication exists between the suprasellar arachnoid space and the sella turcica. We believe that our @entity1 's cyst grew slowly enough to allow normal functioning of the optic nerve as it was being penetrated. Though @entity227 may be gradual and not present until after the optic nerve has been penetrated, these symptoms and signs may still improve with removal of the cyst. Prognosis for visual improvement is difficult to predict with cases of @entity2850 . Improvement in the vision examination after surgical resection is possible even when the optic nerve has been penetrated.

Penetration of an Optic Nerve by a Sellar/Suprasellar XXXX .

@entity1 :: ('9606', 'Species') :: ['patient'] @entity227 :: ('MESH:D014786', 'Disease') :: ['visual symptoms'] @entity2850 :: ('MESH:D009408', 'Disease') :: ['compressive sellar/suprasellar cystic masses'] @entity145 :: ('MESH:D016080', 'Disease') :: ['arachnoid cysts', 'arachnoid cyst'] @entity438 :: ('MESH:D002532', 'Disease') :: ['intracranial aneurysms']
@entity145 :: (MESH:D016080,Disease) :: ['Arachnoid Cyst']
