title: [Rosette-forming glioneuronal tumor of the fourth ventricle. Case report and literature review].
abstract: BACKGROUND
  Rosette-forming glioneuronal tumor (RGNT) of the fourth ventricle is a rare tumor that has been recently characterized. RGNT was included as a new glioneuronal tumor in 2007 by the World Health Organization (WHO) in classification of tumors of the central nervous system. Within this group we found 34 documented cases. We present a new case of RGNT of the fourth ventricle with intratumoral posttraumatic bleeding and review the existing literature of this new entity.
  
  
  METHODS
  A 30-year-old patient was admitted after suffering mild traumatic brain injury (TBI) had headache, diplopia and ataxia. Studies of computed tomography and magnetic resonance imaging revealed a tumor at the fourth ventricle with intralesional bleeding and areas of calcification. She was operated performing macroscopically complete tumor resection. Pathologic examination showed a rosette-forming glioneuronal tumor of the fourth ventricle.
  
  
  CONCLUSIONS
  The RGNT of the fourth ventricle are rare and affect young adults. The evidence shows that the prognosis is usually favorable but there is the possibility of progression and recurrence. Intratumoral hemorrhage is a very unusual presentation that involves risk to the patient's life. Surgical resection should be careful due to the location of these lesions and their extension into critical areas, all patients regardless of extent of resection achieved require a long-term monitoring of the risk of late relapse.
authors: Servicio de Neurocirugía, Hospital Universitario Nuestra Señora de Candelaria, Santa Cruz de Tenerife, España. Electronic address: robertzanabria@hotmail.com.
authors: Robert
authors: R
authors: Zanabria Ortiz
authors: José J
authors: JJ
authors: Domínguez Báez
authors: Eglis
authors: E
authors: Lazo Fernández
authors: Yanire
authors: Y
authors: Sánchez Medina
authors: Luis F
authors: LF
authors: Gómez Perals
authors: Pedro
authors: P
authors: Pérez del Rosario
mesh_terms: D020434:Abducens Nerve Diseases / Q000209:etiology; D000328:Adult; D001265:Athletic Injuries / Q000150:complications; D001930:Brain Injuries / Q000150:complications; D002551:Cerebral Ventricle Neoplasms / Q000150:complications / Q000000981:diagnostic imaging / Q000473:pathology* / Q000601:surgery; D003399:Craniotomy; D003937:Diagnosis, Differential; D019468:Disease Management; D005260:Female; D020546:Fourth Ventricle / Q000000981:diagnostic imaging / Q000473:pathology* / Q000601:surgery; D006261:Headache / Q000209:etiology; D006801:Humans; D006849:Hydrocephalus / Q000209:etiology; D033162:Incidental Findings; D020300:Intracranial Hemorrhages / Q000209:etiology; D008279:Magnetic Resonance Imaging; D018302:Neoplasms, Neuroepithelial / Q000150:complications / Q000000981:diagnostic imaging / Q000473:pathology* / Q000601:surgery; D014057:Tomography, X-Ray Computed
keywords: Cuarto ventrículo; Fourth ventricle; Hemorragia intratumoral; Intratumoral hemorrhage; Rosette-forming glioneuronal tumor; Tumor glioneuronal formador de rosetas