title: MRI and endoscopic ultrasonography in the staging of gastric cancer.
abstract: OBJECTIVE
  to determine the diagnostic precision of endoscopic ultrasounds (EUS) and magnetic resonance imaging (MRI) in the preoperative staging of gastric cancer.
  
  
  METHODS
  a prospective, blind study was carried out in 17 patients diagnosed with gastric cancer (GC) using endoscopic biopsy from November 2002 to June 2003. Patients underwent preoperative MRI and EUS. The reference test used was pathology, and laparotomy for non-resectable cases.
  
  
  RESULTS
  MRI (53%) was better than EUS in the assessment of gastric wall infiltration (35%). MRI (50%) was also superior to EUS (42%) for N staging. After pooling stages T1-T2 and T3-T4 together, results improved for both MRI (67 and 87.5%, respectively) and EUS (67 and 62.5%, respectively) (p < 0.05). N staging--lymph node invasion--results were correct in 50% for MRI as compared to EUS (42%). In classifying positive and negative lymph nodes EUS was superior to MRI (73 versus 54%).
  
  
  CONCLUSIONS
  MRI was the best method in the assessment of gastric wall infiltration. EUS was superior to MRI for T1 staging, and in the assessment of lymph node infiltration.
authors.affiliation: Department of Surgery, San Eloy Hospital, Baracaldo, Vizcaya, Spain.
authors.forename: M G
authors.initials: MG
authors.lastname: Arocena
authors.forename: A
authors.initials: A
authors.lastname: Barturen
authors.forename: L
authors.initials: L
authors.lastname: Bujanda
authors.forename: O
authors.initials: O
authors.lastname: Casado
authors.forename: M M
authors.initials: MM
authors.lastname: Ramírez
authors.forename: J M
authors.initials: JM
authors.lastname: Oleagoitia
authors.forename: M
authors.initials: M
authors.lastname: Galdiz Iturri
authors.forename: P
authors.initials: P
authors.lastname: Múgica
authors.forename: A
authors.initials: A
authors.lastname: Cosme
authors.forename: M A
authors.initials: MA
authors.lastname: Gutiérrez-Stampa
authors.forename: E
authors.initials: E
authors.lastname: Zapata
authors.forename: M
authors.initials: M
authors.lastname: Echenique-Elizondo
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D019160:Endosonography; D005260:Female; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D008875:Middle Aged; D009367:Neoplasm Staging; D011237:Predictive Value of Tests; D011300:Preoperative Care; D012680:Sensitivity and Specificity; D013274:Stomach Neoplasms / Q000175:diagnosis*