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Sagittal T1-weighted MR image demonstrating a large mass occupying the floor of the fourth ventricle.
Postoperative CT scans demonstrating air in the episcleral space around the patient's left eye on the 1st postoperative day (left) and absorption of the air with little residue on postoperative Day 7 (right).
A diagram demonstrating the pathway air could follow (arrows) around the optic nerve and into the episcleral space. Ch = choroidea; EP = episclera; ON = optic nerve; R = retina; SAS = subarachnoid space; Sc = sclera.
McComb JGDavson HHyman SWeiss MH: Cerebrospinal fluid drainage as influenced by ventricular pressure in the rabbit. J Neurosurg 56:790–7971982
Schurr PHMcLaurin RLIngraham FD: Experimental studies on the circulation of the cerebrospinal fluid and methods of producing communicating hydrocephalus in the dog. J Neurosurg 10:515–5251953
Schwalbe G: Der Arachnoidalraum ein Lymphraum und sein Zusammenhang mit den Perichoriodalraum. Zentralbl Med Wissenschaften 7:465–4671869
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