Changes in endoscopic findings of gastritis after cure of H. pylori infection: multicenter prospective trial.
OBJECTIVE
Successful eradication of H. pylori changes pathological findings of gastritis dramatically. However, change of endoscopic mucosal findings is not fully understood. To clarify the short-term changes of endoscopic mucosal findings after cure of H. pylori infection, a multicenter prospective trial was conducted.


METHODS
One hundred and forty-seven patients with H. pylori infection from 12 institutions were enrolled into this prospective cohort trial. Nineteen endoscopic findings using high-resolution white light electronic endoscopy were assessed before and 2-4 months after eradication treatment of H. pylori. H. pylori infection was diagnosed by pathology of three stomach sites using hematoxylin-eosin stain or H. pylori-specific immunostaining. Endoscopic features of the successful eradication group and the failed eradication group were compared. The change of severity of endoscopic features before and after H. pylori eradication were compared between successful eradication and failed eradication.


RESULTS
One hundred and twenty-six patients were analyzed. Eradication rate was 81% (102/126). Non-transparency of gastric juice, diffuse redness of fundic mucosa, enlarged fold, spotty redness of fundic mucosa, flat erosion of stomach, and hemoglobin index of fundic mucosa were significantly different between the successful eradication group and the failed eradication group. Gastric flat erosion was of higher frequency in the successful eradication group. When eradication was successful, spotty redness of fundic gland improved significantly.


CONCLUSIONS
Assessment of endoscopic findings of spotty redness after eradication treatment is useful in the diagnosis of H. pylori eradication.
Division of Endoscopy, Hokkaido University Hospital, Sapporo, Hokkaido 060-8468, Japan. m-kato@med.hokudai.ac.jp
Mototsugu
M
Kato
Shuichi
S
Terao
Kyoichi
K
Adachi
Shigemi
S
Nakajima
Takashi
T
Ando
Norimasa
N
Yoshida
Noriya
N
Uedo
Kazunari
K
Murakami
Shuichi
S
Ohara
Masanori
M
Ito
Naomi
N
Uemura
Takuro
T
Shimbo
Hidenobu
H
Watanabe
Takahiro
T
Kato
Kazunori
K
Ida
D000328:Adult; D002908:Chronic Disease; D016099:Endoscopy, Gastrointestinal; D005260:Female; D005753:Gastric Mucosa / Q000473:pathology*; D005756:Gastritis / Q000382:microbiology* / Q000473:pathology*; D016481:Helicobacter Infections / Q000150:complications* / Q000188:drug therapy*; D016480:Helicobacter pylori; D006801:Humans; D008297:Male; D011446:Prospective Studies