title: [Cerebrospinal fluid edema occurred in normal pressure hydrocephalic patients with functioning ventriculo-peritoneal shunts: report of three cases].
abstract: We describe three cases of cerebrospinal fluid edema (CFE) which occurred in hydrocephalic adult patients who underwent ventriculo-peritoneal shunt operations. After shunt operations, the shunt systems were functioning well and symptoms due to hydrocephalus were resolved. However, computed tomographic scans demonstrated CFE around the ventricular catheters in all patients. The patients were free from symptoms due to CFE and observed conservatively. The one-way valve mechanism is thought to be a possible mechanism of CFE in these cases. Although CFE is a very rare complication to occur after shunt operations, it is necessary to follow up the patients even if the shunt is functioning well.
authors.affiliation: Department of Neurological Surgery, Yokohama Shinmidori Hospital, Midori-ku, Yokohama, Japan.
authors.forename: Ken
authors.initials: K
authors.lastname: Ueyama
authors.forename: Seigo
authors.initials: S
authors.lastname: Koyama
authors.forename: Minoru
authors.initials: M
authors.lastname: Kogiku
authors.forename: Ryoichi
authors.initials: R
authors.lastname: Nakamura
mesh_terms: D000368:Aged; D001929:Brain Edema / Q000209:etiology*; D002555:Cerebrospinal Fluid; D005260:Female; D006801:Humans; D006850:Hydrocephalus, Normal Pressure / Q000601:surgery*; D008297:Male; D008875:Middle Aged; D011183:Postoperative Complications; D017287:Ventriculoperitoneal Shunt / Q000009:adverse effects* / Q000379:methods