title: [T-type primary lymphoma of the central nervous system in immunocompetent patients].
abstract: BACKGROUND
  The primary lymphoma of the central nervous system is an infrequent neoplasia, which represents 1,5% of all primary neoplasias in adult patients. In the last decade its frequency has increased threefold, both in immunodepressed as well as in immunocompetent patients. The non Hodgkin lymphoma of B cells being the most frequent histological type, the primary T cell lymphoma of the CNS is a rare clinical entity.
  
  
  METHODS
  In this study we present three cases of immunocompetent patients with primary lymphoma of the central nervous system of T cells seen during the 6 last years in our hospital, the diagnostic imaging by computerized tomography and magnetic resonance showed the tumorations, but the definitive diagnosis was by stereotaxic cerebral biopsy.
  
  
  CONCLUSIONS
  The lymphomas are radiosensitive to radiotherapy with survivals of approximately 26 months, the combined treatment of surgery and chemotherapy, prior to radiotherapy, may increases survival up to 48 months. Certain aspects of the patient or of the tumor itself are determining factors with respect to the prognosis of survival. We review the relevant literature and study the clinical manifestation, their value of imaging techniques and differential diagnostic and prognosis of survival
authors.affiliation: Sección de Neurorradiología, Servicio de Radiodiagnóstico, Hospital Universitario Miguel Servet, Zaragoza, España. rbarrena@wanadoo.es
authors.forename: M R
authors.initials: MR
authors.lastname: Barrena-Caballo
authors.forename: M
authors.initials: M
authors.lastname: Blanch-Labrador
authors.forename: J A
authors.initials: JA
authors.lastname: Giménez-Mas
authors.forename: J
authors.initials: J
authors.lastname: Alberdi-Viñas
authors.forename: M
authors.initials: M
authors.lastname: Pascual-Piazuelo
authors.forename: L
authors.initials: L
authors.lastname: Zubiri-Ara
mesh_terms: D000328:Adult; D001706:Biopsy; D016543:Central Nervous System Neoplasms / Q000175:diagnosis* / Q000473:pathology / Q000628:therapy; D017809:Fatal Outcome; D006801:Humans; D007121:Immunocompetence; D016399:Lymphoma, T-Cell / Q000175:diagnosis* / Q000473:pathology / Q000628:therapy; D008279:Magnetic Resonance Imaging; D008297:Male; D008875:Middle Aged; D014057:Tomography, X-Ray Computed