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Volume 31, Number 6—June 2025
Research
Prospective Multicenter Surveillance of Non–H. pylori Helicobacter Infections during Medical Checkups, Japan, 2022
Kengo Tokunaga1
, Emiko Rimbara1 , Toshihisa Tsukadaira, Katsuhiro Mabe, Koji Yahara, Hidekazu Suzuki, Tadashi Shimoyama, Mitsushige Sugimoto, Tadayoshi Okimoto, Hidenori Matsui, Masato Suzuki, Keigo Shibayama, Hiroyoshi Ota, Kazunari Murakami, and Mototsugu Kato
, Emiko Rimbara1 , Toshihisa Tsukadaira, Katsuhiro Mabe, Koji Yahara, Hidekazu Suzuki, Tadashi Shimoyama, Mitsushige Sugimoto, Tadayoshi Okimoto, Hidenori Matsui, Masato Suzuki, Keigo Shibayama, Hiroyoshi Ota, Kazunari Murakami, and Mototsugu Kato
Table 1
Characteristics of patients in study of non–H. pylori Helicobacter infections, Japan, 2022*
| Characteristics | Total, n = 673 | Hospital |
|||
|---|---|---|---|---|---|
| A, n = 100 | B, n = 198 | C, n = 199 | D, n = 176 | ||
| Median age, y (range) |
55 (29–91) |
64 (43–88) |
61 (29–91) |
52 (31–77) |
51 (34–77) |
| Sex | |||||
| M | 390 (57.9) | 47 (47.0) | 119 (60.1) | 111 (55.8) | 113 (64.2) |
| F |
283 (42.1) |
53 (53.0) |
79 (39.9) |
88 (44.2) |
63 (35.8) |
| Endoscopic findings | |||||
| Normal | 322 (47.8) | 56 (56.0) | 114 (57.6) | 73 (36.7) | 79 (44.9) |
| Atrophic gastritis | 340 (50.5) | 41 (41.0) | 80 (40.4) | 125 (62.8) | 94 (53.4) |
| Peptic ulcer | 5 (0.7) | 0 | 2 (1.0) | 0 | 3 (1.7) |
| Gastric cancer | 7 (1.0) | 0 | 1 (0.5) | 0 | 6 (3.4) |
| Nodular gastritis | 20 (3.0) | 1 (1.0) | 1 (0.5) | 8 (4.0) | 10 (5.7) |
| White marble appearance | 80 (11.9) | 0 | 9 (4.5) | 31 (15.6) | 40 (22.7) |
| Crack-like mucosa |
67 (10.0) |
0 |
4 (2.0) |
62 (31.2) |
1 (0.6) |
| Atrophic grading† | |||||
| C-0 | 333 (49.5) | 59 (59.0) | 118 (59.6) | 74 (37.2) | 82 (46.6) |
| C-1 | 133 (19.8) | 5 (5.0) | 14 (7.1) | 90 (45.2) | 24(13.6) |
| C-2 | 116 (17.2) | 15 (15.0) | 30 (15.2) | 35 (17.6) | 36 (20.5) |
| C-3 | 37 (5.5) | 11 (11.0) | 7 (3.5) | 0 | 19 (10.8) |
| O-1 | 22 (3.3) | 6 (6.0) | 9 (4.5) | 0 | 7 (4.0) |
| O-2 | 21 (3.1) | 2 (2.0) | 11 (5.6) | 0 | 8 (4.5) |
| O-3 |
11 (1.6) |
2 (2.0) |
9 (4.5) |
0 |
0 |
| Pets | |||||
| No history | 208 (30.9) | 33 (33.0) | 89 (44.9) | 47 (23.6) | 39 (22.2) |
| Dog | 354 (52.6) | 48 (48.0) | 85 (42.9) | 110 (55.3) | 111 (63.1) |
| Cat |
148 (22.0) |
29 (29.0) |
26 (13.1) |
46 (23.1) |
47 (26.7) |
| Pork offal ingestion | |||||
| No history | 275 (40.9) | 11 (11.0) | 121 (61.1) | 29 (14.6) | 114 (64.8) |
| Sometimes | 347 (51.6) | 78 (78.0) | 75 (37.9) | 154 (77.4) | 40 (22.7) |
| Often |
51 (7.6) |
11 (11.0) |
2 (1.0) |
16 (8.0) |
22 (12.5) |
| Infection status | |||||
| H. pylori infection | 24 (3.6) | 7 (7.0) | 3 (1.5) | 6 (3.0) | 8 (4.5) |
| Posteradication‡ | 256 (38.0) | 35 (35.0) | 72 (36.4) | 61 (30.7) | 88 (50.0) |
| No H. pylori infection | 393 (58.4) | 58 (58.0) | 123 (62.1) | 132 (66.3) | 80 (45.5) |
*Values are no. (%) except as indicated. Hospital A is in Hokkaido, B is in Tokyo, C is in Nagano, and D is in Okayama. †C-0, no atrophy; C-1 and C-2, mild atrophy; C-3 and O-1, moderate atrophy; and O-2 and O-3, severe atrophy. ‡Patients who had previous H. pylori eradication therapy.
1These authors contributed equally to this article.
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