title: [Prolonged cerebral salt wasting following craniopharyngioma surgery and posterior reversible encephalopathy syndrome: a case report].
abstract: A 9-year-old boy was admitted to our hospital with daytime urinary incontinence for the past one year. MRI showed craniopharyngioma occupying the third ventricle. The tumor was excised by interhemispheric approach. Because hyponatremia and polyuria with high renal loss of sodium were observed on postoperative day 3, hydrocortisone and DDAVP were replaced. On postoperative day 24, successive general convulsions and hyponatremia recurred, and MRI FLAIR imaging showed marked brain edema in the bilateral parieto-occipital lobes. This finding disappeared late in the course of treatment, and the case was diagnosed as posterior reversible encephalopathy syndrome. The pathophysiology of cerebral salt wasting and posterior reversible encephalopathy syndrome in a craniopharyngioma patient are also discussed in the article.
authors.affiliation: Department of Neurosurgery, University of Occupational and Environmental Health, Kitakyusyu, Japan.
authors.forename: Tatsuya
authors.initials: T
authors.lastname: Ohtonari
authors.forename: Masanori
authors.initials: M
authors.lastname: Hashimoto
authors.forename: Eiichiro
authors.initials: E
authors.lastname: Urasaki
authors.forename: Akira
authors.initials: A
authors.lastname: Yokota
authors.forename: Shunsuke
authors.initials: S
authors.lastname: Araki
authors.forename: Koutaro
authors.initials: K
authors.lastname: Asayama
authors.forename: Akira
authors.initials: A
authors.lastname: Shirahata
mesh_terms: D001921:Brain / Q000473:pathology; D001929:Brain Edema / Q000209:etiology*; D002551:Cerebral Ventricle Neoplasms / Q000601:surgery; D002648:Child; D003397:Craniopharyngioma / Q000601:surgery*; D038524:Diffusion Magnetic Resonance Imaging; D006801:Humans; D020343:Hypertensive Encephalopathy / Q000209:etiology*; D007010:Hyponatremia / Q000209:etiology*; D008297:Male; D011183:Postoperative Complications / Q000175:diagnosis*