Masterpass GI Paper 3

Question 1

Commonest appearance of inflammatory polyp

Answer 1

polypoid protruberance arising near cardia

Question 2

Coeliac axis node in gastro-oesophageal junction adenocarcinoma

Answer 2

Increases to N1, M1b, unsuitable for curative surgery

Question 3

Commonest cause of inflammatory gastric outlet obstruction

Answer 3

Peptic ulcer disease

Question 4

Submucosal umbilicated mass in stomach

Answer 4

Ectopic pancreatic tissue in stomach

Question 5

Commonest internal hernia

Answer 5

Right paraduodenal, commonly displaces inferior mesenteric vein

Question 6

Enhancing submucosal lesion in ileum

Answer 6

Carcinoid tumour

Question 7

Tiny bowel nodules, urticarial rash

Answer 7

Systemic mastocytosis

Question 8

Features of malignant polyps

Answer 8

> 2cm,
Lobulated,
Sessile,
Multiple,
Indented, retracted

Question 9

MRI characteristics of haemangioma

Answer 9

Hypointense on T1, Hyperintense on T2

Question 10

Hyperintense on T1, Hypointense on T2 in liver

Answer 10

Adenoma

Question 11

Spread of fungal infections to liver

Answer 11

Hepatic artery (other infections spread via portal vein)

Question 12

Density of spleen on CT (unenhanced)

Answer 12

40-60HU, 5-10 less than liver

Question 13

Commonest cardiovascular cause of splenic infarcts

Answer 13

Bacterial endocarditis

Question 14

Commonest cause of multiple splenic calcifications

Answer 14

Granulomatous disease

Question 15

US appearance of emphysematous cholecytitis

Answer 15

Arc like hyperechogenic areas outlining the GB wall

Question 16

Most specific sign of impacted cystic duct stone on scintigrophy

Answer 16

Non-visualisation of gallbladder by 4 hours

Question 17

Commonest opportunistic cause of biliary infection in HIV

Answer 17

CMV

Question 18

Focal low attenuation around the pancreas on CT following trauma

Answer 18

Pancreatic contusion

Question 19

Focal enlargement of pancreas, with parenchymal calcification

Answer 19

Chronic pancreatitis