QuestionSBA
QuestionChoice
Giardia duodenalis is an environmentally resistant gut parasite that inhibits the uptake and metabolism of bile. This leads to the accumulation of fatty acids and malabsorption. It is not associated with causing gastric cancer.
10004785
e
*Giardia duodenalis*
QuestionChoice
Chlamydia trachomatis causes the most common bacterial sexually transmitted infection - chlamydia. It is not associated with causing gastric cancer.
10004784
d
*Chlamydia trachomatis*
QuestionChoice
Helicobacter pylori infection is a major risk factor for developing peptic ulcer disease and gastric cancer. Often acquired in childhood, patients can have lifelong infections with mostly no symptoms. Damage to the stomach lining leads to peptic ulcers. Any form of long-term inflammation or repair leads to a cycle of damage and repair, and this increases the chance of cancer development.
10004781
a
*Helicobacter pylori*
QuestionChoice
Campylobacter jejuni is one of the most common causes of diarrhoea, usually acquired through contaminated food such as uncooked meat. Although associated with gastroenteritis, the bacterium is not associated with gastric cancer.
10004782
b
*Campylobacter jejuni*
QuestionChoice
Norovirus, also known as the winter vomiting bug, is a highly infectious virus that causes viral gastroenteritis. Although it causes unpleasant symptoms such as diarrhoea and vomiting, it is not associated with causing gastric cancer.
10004783
c
*Norovirus*
Concept
Chapter
2693
4333
Gastric cancer
Topic
135
General surgery
13503
A 65-year-old male presents to his GP with upper abdominal pain, indigestion and haematemesis. The GP refers him for investigations to exclude gastric malignancy.

Which of the following organisms is closely associated with gastric carcinoma?
a