title: [Frequency of visualization of celiac ganglia by endoscopic ultrasound and its potential in assessing neural invasion in patients with pancreatic lesions].
abstract: BACKGROUND
  Celiac ganglia (CG) can be seen by endoscopic ultrasound; they play an important role in pain management and are a potential site for extrapancreatic tumor neural invasion.
  
  
  OBJECTIVE
  To evaluate the frequency of CG visualization during endoscopic ultrasound examination and to evaluate the feasibility of this technique to identify extrapancreatic tumor neural invasion in patients with pancreatic lesions.
  
  
  METHODS
  We retrospectively reviewed all endoscopic ultrasound studies performed between November 2007 and June 2010. Images of the celiac region were presented to an endosonographer, who reported the presence or absence of CG.
  
  
  RESULTS
  We included 31 cases. CG were identified in 14 (45%) cases. Average size was 10mm (range 4-25mm) by±1mm (range 1-7mm). In 2 cases, fine needle aspiration biopsy was performed and reported nerve cell bodies; in one case malignant cells were seen.
  
  
  CONCLUSIONS
  CG were identified in 45% of the cases. Fine needle aspiration biopsy can detect unanticipated extrapancreatic tumor neural invasion in pancreatic malignancies.
authors.affiliation: Unidad de Endoscopia Avanzada, Centro Médico ABC, México D.F., México; Laboratorio de Hígado, Páncreas y Motilidad (HIPAM), Unidad de Medicina Experimental, Facultad de Medicina, Universidad Nacional Autónoma de México (UNAM), México D.F., México. Electronic address: mariopl@prodigy.net.mx.
authors.forename: M
authors.initials: M
authors.lastname: Peláez-Luna
authors.affiliation: Departamento de Gastroenterología, Hospital Español, México D.F., México.
authors.forename: J P
authors.initials: JP
authors.lastname: Borbolla-Arizti
authors.affiliation: Unidad de Endoscopia Avanzada, Centro Médico ABC, México D.F., México.
authors.forename: A
authors.initials: A
authors.lastname: Herrera-Lozano
authors.affiliation: Departamento de Patología, Centro Médico ABC, México D.F., México.
authors.forename: J
authors.initials: J
authors.lastname: Baquera-Heredia
mesh_terms: D000230:Adenocarcinoma / Q000000981:diagnostic imaging / Q000473:pathology; D002288:Adenocarcinoma, Mucinous / Q000000981:diagnostic imaging / Q000473:pathology; D044963:Biopsy, Fine-Needle; D019160:Endosonography / Q000379:methods*; D005728:Ganglia, Sympathetic / Q000000981:diagnostic imaging*; D006801:Humans; D010181:Pancreatic Cyst / Q000000981:diagnostic imaging / Q000473:pathology; D010190:Pancreatic Neoplasms / Q000000981:diagnostic imaging* / Q000473:pathology; D012189:Retrospective Studies
keywords: Celiac ganglia; Endoscopic ultrasound; Ganglios celiacos; Invasión neural; Neural invasion; Pancreatic cyst; Quiste pancreático; Ultrasonido endoscópico