Gi Quiz - Round 4

A 36-year-old man underwent a cholecystectomy, and the photograph of the cut-open gallbladder is shown below.

What is the most likely composition of the gallstones shown? 

• Calcium bilirubinate

• Cholesterol

• Cholesterol and calcium carbonate

• Calcium phosphate

Faecal calprotectin levels are normal in:

• Irritable bowel syndrome

• Ulcerative colitis

• Crohn disease

• Carcinoma of the colon

Regarding gastrointestinal stromal tumours

• They are of smooth muscle origin

• They are tumours limited to the small intestine

• Show microsatellite instability

• Treated with targeted therapy

Which of the following site in the colon is most likely to show ischaemic ulcers?

• Caecum

• Ascending colon

• Splenic flexure

• Rectum

Which antiemetic, when combined with SSRIs, poses the greatest risk for serotonin syndrome?

• Domperidone

• Ondansetron

• Promethazine

• Metoclopramide

Which PPIs should be avoided with clopidogrel due to the inhibition of CYP2C19, potentially reducing clopidogrel’s antiplatelet effect?

• Pantoprazole

• Lansoprazole

• Rabeprazole

• Omeprazole

Which of the following adverse effects is most closely associated with all anti-TNF therapies?

• Bradycardia

• Reactivation of latent tuberculosis

• Renal tubular acidosis

• Peripheral neuropathy

Select the most likely viral aetiology to cause watery diarrhoea in an 18-month-old child who presented to the emergency unit of Colombo North Teaching Hospital.

• Human Adenovirus 40

• Astrovirus

• Rotavirus

• Sapoviruses

The given photograph shows a pathogen isolated from a stool sample of a traveller returned from India. State the most likely pathogen

• Enterotoxigenic Escherichia coli

• Campylobacter jejuni

• Non-typhoidal salmonella species

• Vibrio cholera

The following worms were removed from a rectal mass of 6-year-old child residing in the Colombo municipality. These worms represent the adult stage of

• Ascaris lumbricoides

• Enterobius vermicularis

• Strongyloides stercoralis

• Trichuris trichiura