title: Green urine: A bezoar effect.
abstract: The green color in urine may suggest the presence of a severe pathology needing treatment. Many different potential causes of green urine have previously been reported. In our case, after ruling out other potential causes of green urine, it was suggested that the surgical manipulation of the paralytic ileum might have induced the reabsorption of the methylene blue which had been retained in the bowel (bezoar effect), even 96 hours after the nasogastric administration.
  
  
  CONCLUSIONS
  The staff should keep in mind this possible effect due to methylene blue to recognize early and avoid unnecessary laboratory tests.
  This case report illustrates the significance of urine discoloration, sometimes indicate the presence of a systemic disorder and some rare cases, this phenomenon has no pathologic effects. To our knowledge, this is the first case report of a green urine by drug bezoar due methylene blue in children.
authors.affiliation: Clinical Chemistry Department, Hospital Universitari Son Espases, Carretera de Valldemossa 79, 07120, Palma de Mallorca, Spain; Instituto de Investigación Sanitaria de Palma (IdISPa), Palma de Mallorca, Spain. Electronic address: dr.morell.uab@gmail.com.
authors.forename: Daniel
authors.initials: D
authors.lastname: Morell-Garcia
authors.affiliation: Clinical Chemistry Department, Hospital Universitari Son Espases, Carretera de Valldemossa 79, 07120, Palma de Mallorca, Spain; Instituto de Investigación Sanitaria de Palma (IdISPa), Palma de Mallorca, Spain. Electronic address: pepmiquel@gmail.com.
authors.forename: Josep M
authors.initials: JM
authors.lastname: Bauça
authors.affiliation: Clinical Chemistry Department, Hospital Universitari Son Espases, Carretera de Valldemossa 79, 07120, Palma de Mallorca, Spain. Electronic address: angela.garcias@ssib.es.
authors.forename: Angela
authors.initials: A
authors.lastname: García-Suquía
authors.affiliation: Clinical Chemistry Department, Hospital Universitari Son Espases, Carretera de Valldemossa 79, 07120, Palma de Mallorca, Spain. Electronic address: juan.robles@ssib.es.
authors.forename: Juan
authors.initials: J
authors.lastname: Robles
authors.affiliation: Clinical Chemistry Department, Hospital Universitari Son Espases, Carretera de Valldemossa 79, 07120, Palma de Mallorca, Spain; Instituto de Investigación Sanitaria de Palma (IdISPa), Palma de Mallorca, Spain; Clinical Toxicology Unit, Hospital Universitari Son Espases, Palma de Mallorca, Spain. Electronic address: bernardino.barcelo@ssib.es.
authors.forename: Bernardino
authors.initials: B
authors.lastname: Barceló
authors.affiliation: Department of Pediatrics, Hospital Universitari Son Espases, Palma de Mallorca, Spain. Electronic address: andrea.fernandez@ssib.es.
authors.forename: Andrea
authors.initials: A
authors.lastname: Fernández-Ballina
authors.affiliation: Department of Pediatrics, Hospital Universitari Son Espases, Palma de Mallorca, Spain; Intensive Care Unit, Hospital Universitari Son Espases, Palma de Mallorca, Spain. Electronic address: juanc.decarlos@ssib.es.
authors.forename: Juan C
authors.initials: JC
authors.lastname: Carlos-Vicente
mesh_terms: D001630:Bezoars / Q000652:urine*; D002648:Child; D003116:Color; D004396:Coloring Agents; D006801:Humans; D007082:Ileum / Q000601:surgery; D008297:Male; D008751:Methylene Blue
chemical_list: D004396:Coloring Agents; D008751:Methylene Blue
keywords: Green urine; Intensive care; Methylene blue; Pediatrics surgery