Helicobacter pylori Gastritis: Radiographic Findings*

Abstract

Helicobacter pylori Gastritis:  Radiographic Findings*

Sirirat           Teavirat                         MD**

Supatsri       Keawsomnuksakul     MD***

Marut            Yananarop                   MD****

* This work was supported by the Vajira Research Fund (annual-research fund 1999)

** Department of Radiology, BMA Medical College and Vajira Hospital

*** Department of Medical, BMA Medical College and Vajira Hospital

**** Department of Pathology, BMA Medical College and Vajira Hospital

Objective: To evaluate accuracy of double contrast upper gastrointestinal study in diagnostic H. pylori gastritis.

Study design: Diagnostic test.

Subjects: Eighty-eight patients who had abdominal pain more than 2 weeks with suspected gastric ulcer or gastritis and treated at BMA Medical College and Vajira Hospital from October 1999 to Mach 2003.

Methods: The patients who had abdominal pain more than 2 weeks with suspected peptic ulcer or gastritis were investigated by double-contras upper gastrointestinal study.  After that all patients were performed esophagogastroduodenal scope with biopsy the lesion for pathological diagnosis within 2 weeks.  The results of double-contrast upper gastrointestinal study were compared with pathological diagnosis.

Main outcome measures: The sensitivity, specificity, accuracy, false positive rate, false negative rate , positive predictive value, negative predictive value, post test likelihood if test negative, positive likelihood ratio, negative likelihood ratio of double-contrast upper gastrointestinal study to evaluate accuracy in diagnostic H. Pylori gastritis.

Results: In this study, tricked astral folds were detected as the most common and important sign from double contrast upper gastrointestinal study in diagnostic H, pylori gastritis.  The sensitivity, specificity, accuracy, false positive rate, false negative rate, positive predictive value, negative predictive value of double-contrast upper gastrointestinal study to evaluate accuracy in diagnostic H. pylori gastritis  were 81.4, 71.1, 76.1, 18.6, 2.9, 72.9 and 80.0% respectively.  The post test likelihood if test negative, positive likelihood ratio and negative likelihood ratio were 0.2, 2.8 and 0.3 respectively.

Conclusion: The accuracy of double contrast upper gastrointestinal study in diagnostic Helicobacter pylori gastritis was quite high.  The most common and important sign was tricked astral folds.  It was the useful study and should be performed in all patients who suspected peptic ulcer.

Key word: Helicobacter pylori gastritis, upper gastrointestinal study, accuracy

Vajira Med J 2003 ; 47 : 113 - 121