Table 2.

Diagnosis of H. pylori infection and IgG response to CagA in patients with gastroduodenal lesions

Diagnosis*No. of patientsH. pylori histology+ (%)*H. pylori serology+ (%)CagA serology+ (%)
Non–atrophic gastritis368227 (63.1)270 (73.4)236 (64.1)
Atrophic gastritis1411 (78.6)12 (85.7)9 (64.3)
Intestinal metaplasia11076 (69.1)91 (82.7)88 (80.0)
Gastric cancer6526 (41.3)43 (66.2)43 (66.2)
Duodenal ulcer5948 (81.4)52 (88.1)43 (72.9)
Total618388 (63.8)469 (75.9)421 (68.1)
  • * Patients might have more than one pathology diagnosis in the six biopsies analyzed, but only the most severe was considered.