title: Esophageal and gastric vasculature in children with extrahepatic portal hypertension: evaluation by intravenous CT portography.
abstract: OBJECTIVE
  To compare the findings related to esophageal/gastric varices and congestive gastropathy on intravenous computed tomography (CT) portography (CTP) and upper gastrointestinal endoscopy (UGIE) in children with extrahepatic portal venous obstruction (EHO) presented with hematemesis.
  
  
  METHODS
  Fifty pediatric patients (age < 15 years) with EHO (initially diagnosed on abdominal ultrasound) presented with hematemesis and underwent UGIE and intravenous CTP using a helical CT scanner. Axial sections of 2 mm each were obtained with a collimation of 2 mm and a table feed of 3 mm. CTP findings on these axial sections were compared with UGIE (gold standard).
  
  
  RESULTS
  The sensitivity of CTP for detection of esophageal varices, gastric varices, and gastropathy was 32/33 (97%), 38/40 (95%), and 30/32 (93%), respectively. CTP showed false positivity as well, which was 5/17 (29%), 2/10 (20%), and 13/17 (76%) for esophageal varices, gastric varices, and gastropathy, respectively. On follow-up UGIE, the endoscopic features appeared in 14/19 (74%) of false positive patients. Therefore, false positivity for all the parameters on CTP when compared to the initial UGIE represented the changes in vasculature before they were endoscopically manifest.
  
  
  CONCLUSIONS
  CTP was likely to pick up changes in esophageal and gastric vasculature earlier than UGIE in children with EHO presented with hematemesis.
authors.affiliation: Department of Radiodiagnosis, All India Institute of Medical Sciences Campus, E-61, Ansari Nagar, 110 029, New Delhi, India. m_gulati@hotmail.com
authors.forename: M S
authors.initials: MS
authors.lastname: Gulati
authors.forename: S B
authors.initials: SB
authors.lastname: Paul
authors.forename: N K
authors.initials: NK
authors.lastname: Arora
authors.forename: P
authors.initials: P
authors.lastname: Mathur
authors.forename: M
authors.initials: M
authors.lastname: Berry
mesh_terms: D000293:Adolescent; D002648:Child; D002675:Child, Preschool; D016099:Endoscopy, Gastrointestinal; D004932:Esophageal and Gastric Varices / Q000000981:diagnostic imaging*; D005189:False Positive Reactions; D006471:Gastrointestinal Hemorrhage / Q000000981:diagnostic imaging*; D006801:Humans; D011172:Portography / Q000379:methods*; D011446:Prospective Studies; D012680:Sensitivity and Specificity; D014057:Tomography, X-Ray Computed / Q000379:methods*