Duodenal ulcer
Bleeding ulcer
Gastric ulcer
InflammationHelicobacter pylori causes inflammation of the gastric mucosa (gastritis). This isoften asymptomatic.
InfectionHelicobacter pylori infects the lower part of the stomach, antrum.
UlcerGastric inflammation may lead to duodenal or gastric ulcer.Severe complications includebleeding ulcer and perforated ulcer.
Helicobacter pylori
Inflammatory cells
Increasedacid secretion
Inflammation Inflammation
© The Nobel Committee for Physiology or Medicine
Gastri
c m
ucos
a
Protectivemucus
Pylorus
Duodenum
Helicobacter pylori — the bacterium causing peptic ulcer disease
Antrum
Corpus
Helicobacter pylori