title: Unicentric Castleman's disease in the posterior cervical space mimicking a schwannoma.
abstract: BACKGROUND
  Castleman's disease (CD) is a benign and rare lymphoid tissue disease of undetermined origin. It affects the neck infrequently; therefore its preoperative diagnosis is difficult and can be confused with other hypervascular lesions.
  
  
  METHODS
  We present a case of unicentric hyaline-vascular CD in the posterior cervical space (PCS) evaluated by MRI and initially presumed to be a cervical schwannoma.
  
  
  CONCLUSIONS
  As shown with our case, unicentric CD should be included in the differential diagnosis for masses in the PCS, especially when a hypervascular lesion like a schwannoma is suspected. The finding of central low intensity areas in a fissured and radial pattern in T2 sequences can help to consider CD when dealing with PCS masses as shown by previous cases and our reported experience.
authors.affiliation: Department of radiology, neuroradiology section, hospital Pablo Tobón Uribe, Calle 78B # 69-240, Medellín, Colombia. Electronic address: martin127d@gmail.com.
authors.forename: M
authors.initials: M
authors.lastname: Ochoa-Escudero
authors.affiliation: Department of radiology, neuroradiology section, universidad de Antioquia, Calle 67 Número 53-108, Medellín, Antioquia, Colombia.
authors.forename: D A
authors.initials: DA
authors.lastname: Herrera
authors.affiliation: Department of radiology, neuroradiology section, UC Davis Medical Center, Sacramento, CA, USA.
authors.forename: A B
authors.initials: AB
authors.lastname: Dublin
authors.affiliation: Oncology unit, hospital Pablo Tobón Uribe, Calle 78B # 69-240, Medellín, Colombia; Department of surgery, universidad de Antioquia, Calle 67 Número 53-108, Medellín, Antioquia, Colombia.
authors.forename: A
authors.initials: A
authors.lastname: Sanabria
mesh_terms: D000328:Adult; D005871:Castleman Disease / Q000175:diagnosis* / Q000601:surgery; D003937:Diagnosis, Differential; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D009442:Neurilemmoma / Q000175:diagnosis; D013125:Spinal Neoplasms / Q000175:diagnosis
keywords: Castleman's disease; Hypervascular lesion; Posterior cervical space; Schwannoma