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Correlation between the ABC classification and radiological findings for assessing gastric cancer risk

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Abstract

Purpose

To investigate the correlation between ABC risk assessment and radiological findings of gastric mucosa and to propose an improved method for gastric cancer screening.

Materials and Methods

We evaluated 318 participants with Helicobacter pylori (Hp) antibody titers, serum pepsinogen (PG) and upper GI radiography and then classified them into three groups: A, double-negative; B, Hp-positive, PG-negative; C, PG-positive. Group A was subclassified as: A-1, Hp antibody titer <3.0 U/ml; A-2, Hp antibody titer ≥3.0 U/ml. Results for group A and non-A (B or C) participants and radiological findings of gastric mucosa (fold and area gastricae) were analyzed retrospectively.

Results

Radiological findings differed significantly between the 207 A-1 and 98 non-A group. Odds ratios were 17.72 for fold distribution, 10.63 for fold thickness, 6.10 for fold characteristics, and 10.62 for area gastricae. Presence of ≥2 risk factors offered 90.3 % sensitivity, 94.7 % specificity, and 93.3 % accuracy. Nine (69.2 %) of the 13 A-2 group participants and 11 (5.3 %) A-1 group participants had a risk for gastric cancer according to radiological findings.

Conclusion

A good correlation exists between ABC classifications and radiological findings for gastric cancer risk, but some discrepant cases exist. We recommend both methods as screening for gastric cancer.

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Acknowledgments

The authors thank Hajime Ohishi, MD, and the staff of Takanohara Central Hospital for their support.

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Correspondence to Takahiro Itoh.

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Conflict of interest

The authors have no conflict of interest to disclose.

Ethical Statement

This study was approved without the need for individual informed consent by our institutional ethics committee and is in accordance with the 1964 Declaration of Helsinki and its later amendments.

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Itoh, T., Saito, M., Marugami, N. et al. Correlation between the ABC classification and radiological findings for assessing gastric cancer risk. Jpn J Radiol 33, 636–644 (2015). https://doi.org/10.1007/s11604-015-0469-3

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  • DOI: https://doi.org/10.1007/s11604-015-0469-3

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