Gastrointestinal - Practice papers Flashcards
(40 cards)
- Regarding Peutz-Jeghers syndrome:
a) It is inherited in an autosomal recessive manner
b) There is an association with intussusception
c) Polyps are seen in the stomach
d) Patients are at increased risk of gastrointestinal adenocarcinoma
e) It is associated with pigmented lesions on the fingers
1
a) False - autosomal dominant
b) True
c) True - polyps are usually in the small bowel, most commonly seen in the jejunum but
polyps are also seen in the colon and stomach
d) True - but polyps themselves are hamartomatous polyps and are benign
f) True - multiple melanin spots are seen on mucous membranes, facial skin, fingers and toes
- The following statements regarding familial adenomatous polyposis syndrome are true:
a) Its inheritence pattern is autosomal dominant
b) Clinical symptoms become evident during the 5th-6th decade
c) Polyps are identified in the stomach in 5% of affected cases
d) It is associated with peri-ampullary carcinoma
e) It is associated with alopecia
1
a) True
b) False - usually presents 20-30-year-olds
c) True
d) True
e) False - small bowel polyps, nail atrophy, brown skin pigmentation and alopecia are features
of Canada-Cronkhite syndrome
- Regarding carcinoid tumour:
a) It is rarely multiple
b) Carcinoid syndrome is the presentation in only 20-30% of cases
c) The commonest location for this tumour is the appendix
d) 50% of tumours greater than 2 cm in size have metastases
e) Angulation of small bowel loops on small bowel follow through is a diagnostic feature
3
a) False - 33% are multiple
b) False - carcinoid syndrome is the presentation in 7% of cases. Syndrome arises due to
excess serotonin levels
c) True - located in the appendix in 30-45%
d) False - 50% of tumours of 1-2 cm in size have metastases, 85% of tumours greater than 2
cm have metastases
e) True - there is a strong desmoplastic response in the mesentery, resulting in angulation and
kinking of small bowel loops which can cause small bowel obstruction
- The following statements regarding achalasia are correct:
a) Dilatation of the oesophagus begins in the upper third
b) Multiple non-peristaltic contractions are seen on barium swallow
c) There is an association with Plummer-Vinson syndrome
d) A prominent gastric air bubble is seen on erect CXR
e) Squamous cell carcinoma of the oesophagus is a recognized complication
4
a) True - progresses to involve the entire length
b) True
c) False
d) False
e) True
- Regarding toxic megacolon:
a) Ischaemic colitis is the most common underlying pathological cause
b) Multiple air fluid levels are seen on plain abdominal X-ray
c) Barium enema is contraindicated
d) Has a mortality of 5-8%
e) Can present as bloody diarrhoea
5
a) False - ulcerative colitis
b) False - few air fluid levels are seen. Plain abdominal radiograph appearances of a dilated
transverse colon of greater than 5.5 cm in diameter and pneumatosis coli
c) True
d) False - mortality of 20%
e) True
- The following statements regarding lymphoma of the gastrointestinal tract are true:
a) There is an increased risk associated with ulcerative colitis
b) The stomach is the most common site of involvement by non- Hodgkin’s lymphoma
c) Diffuse involvement of the whole stomach is seen in 10-15%
d) In the colon the rectum is most commonly involved
e) Presents with thickened valvulae conniventes in the small bowel
6
a) False - increased risk associated with Crohn’s disease, coeliac disease, AIDS, systemic
lupus erythematosus
b) True
c) False - diffuse involvement in 50%
d) False - caecum is most commonly involved
e) True
- Duodenal ulcers:
a) Are usually associated with a normal level of gastric acid secretion
b) Are most likely to be found in the posterior wall of the duodenal bulb
c) Are usually greater than 2 cm in size
d) Perforation is a complication in 20-30%
e) Vagotomy is a recognized treatment
7
a) False - gastric acid levels are usually increased. Gastric ulcers are associated with a normal
or low level of gastric acid
b) False - ulcers are bulbar in 95% and Postbulbar in 3-5%. 50% are located in the anterior
wall
c) False - less than 1 mm in size. Giant duodenal ulcers >2 cm are rare and have a higher risk
of morbidity/mortality
d) False - perforation is a complication in <10%
e) True
- Regarding oesophageal duplication cysts:
a) The oesophagus is the commonest site for duplication cysts in the alimentary canal
b) They are more commonly found on the left side
c) There is an association with spina bifida
d) 50-60% occur in the mid-oesophagus
e) On a PA CXR they can be mistaken for a hiatus hernia
8
a) False - found in the ileum 30%, oesophagus 20%, colon 15-30%, stomach 10%
b) False - right
c) True - there is an association with vertebral anomalies - spina bifida, hemivertebra and
fusion defects
d) False - 60% occur in the distal oesophagus, 27% upper and 17% mid
e) True - posterior mediastinal mass +/- air fluid level
- The following features are commoner in Crohn’s disease than in ulcerative colitis:
a) Toxic megacolon
b) Increased risk of colonic carcinoma
c) Formation of vesicocolic fistula
d) Thickening of the ileocaecal valve
e) Shallow ulcers
9
a) False
b) False
c) True
d) True - gaping ileocaecal valve In ulcerative colitis
e) False - deep ulcers commoner in Crohn’s disease
- The following drugs reduce gastric emptying:
a) Buscopan
b) Glucagon
c) Metoclopramide
d) Procyclidine
e) Indomethacin
10
a) True
b) True
c) False
d) False
e) False
- Giardiasisis is associated with:
a) Gastric varices ‘
b) Hypoperistalsis with a reduced transit time
c) Malabsorption
d) Thickened small bowel mucosal folds
e) Ulceration
11
a) False
b) False
c) True
d) True
e) False
- Regarding peritoneal spaces:
a) The right subhepatic space communicates with the lesser sac
b) The bare area of the liver is located between reflections of the right and left coronary
ligaments
c) The left subphrenic space is separated from the right subphrenic space by the falciform
ligament
d) The splenorenal ligament separates the left subphrenic space from the left paracolic gutter
e) The gastrocolic ligament connects the lesser curve of the stomach to the superior aspect of
the transverse colon
12
a) True - via the epiploic foramen
b) True
c) True
d) False - phrenicolic ligament attaches the descending colon to the left hemidiaphragm
e) False - greater curve
- Regarding CT colonography:
a) No preparation is required
b) Images are acquired with the patient supine and prone
c) A mass which does not move after changing patient position represents a polyp
d) Extracolonic findings that require further investigation are found in 10% of patients
e) The appendix orifice can be differentiated from tumour by coronal reformats
13
a) False - same preparation as barium enema
b) True
c) False - small faecal residue can be adherent to the wall. Small foci of faecal residue may
also not contain gas bubbles, unlike larger foci
d) True
e) True
- Imaging features of acute appendicitis include:
a) Enlarged appendix >6 mm in diameter
b) Enlarged mesenteric lymph nodes
c) Presence of appendicolith
d) Focal caecal apical wall thickening
e) Peri-appendiceal fat stranding
14
a) True
b) True
c) True
d) True
e) True
- Regarding gastrointestinal stromal tumours (GIST):
a) The most significant criteria for predicting malignant potential is tumour size
b) The commonest location is the sigmoid
c) It is a cause of haematemesis
d) There is an association with neurofibromatosis Type 1
e) Contrast enhancement is invariably uniform
15
a) True
b) False - stomach
c) False
d) True
e) False - heterogenous with significant haemorrhage and necrosis
- Regarding MR imaging of anal cancer:
a) Anal cancer is associated with infection with human papilloma virus
b) Anal cancer is usually an adenocarcinoma
c) The dentate line of the anal canal is identified on MRI
d) Tumours arising below the dentate line spread to interna! iliac lymph nodes
e) Primary anal tumours are of high signal intensity on T2 weighted images
16
a) True
b) False - squamous cell carcinoma
c) False - not seen
d) False - tumours below the dentate line spread to the inguinal lymph nodes. Tumours arising
above, spread to perirectal and retroperitoneal nodes
e) True - reduced signal intensity on T1
- Regarding small bowel obstruction:
a) Adhesions are responsible for 20-25% of small bowel obstructions
b) Right-sided paraduodenal hernias are commoner than the left
c) Adenocarcinomas of the small bowel usually arise in the ileum
d) Gas within the bowel wall is an imaging feature of a bowel infarct
e) Small bowel intussusceptions can occur in coeliac disease
17
a) False - 50-60%
b) False - left are commoner than right. Paraduodenal hernias are the commonest internal
hernias. Small bowel herniates into Landzert’s fossa to the left of the duodenum, which
arises due to a defect in the descending mesocolon
c) False - proximal jejunum or duodenum
d) True
e) True
- Regarding post-transplantation lymphoproliferative disorder (PTLD):
a) It most commonly occurs in renal transplant patients
b) PTLD contributes to death in 10-12% of transplant recipients
c) Mean presentation occurs 40-50 months post-transplantation
d) Extranodal disease is considerably less common than in lymphoma affecting nonimmunocompromised
people
e) The spleen is the most frequently affected organ
18
a) False - least commonly occurs in renal transplant patients. Commonest in heart-lung
recipients
b) False - 1 %
c) True
d) False - considerably more common
e) False - liver
- Causes of disproportionate fat stranding in excess of the degree of bowel wall thickening
include:
a) Crohn’s disease
b) Omental infarction
c) Diverticulitis
d) Epiploic appendigitis
e) Ischaemic bowel
19
a) False
b) True
c) True
d) True - appendicitis is the other cause
e) False
- Regarding oesophageal balloon dilatation and stent placement:
a) In benign strictures, oesophageal dilatation has technical success in 90-95%
b) Oesophageal stent placement relieves dysphagia in 50-60%
c) An oesophageal stricture should be evaluated with endoscopy before dilatation/stent
placement
d) Risk of perforation following dilatation is 2-3%
e) Stents are more likely to migrate proximally
20
a) True - dilatation of oesophageal webs gives highest success rate
b) False - relieves dysphagia in 90%
c) True
d) True
e) False - migration occurs in up to 35%. Stents are more likely to migrate distally and most
commonly occurs when the gastro- oeophageal junction is crossed
- Regarding hepatic adenoma:
a) It is associated with Type 1 glycogen storage disease
b) Is located in the left lobe of the liver in 60-75% of cases
c) Is easily differentiated from hepatocellular carcinoma on MRI
d) Is hypovasular
e) Often reduces in size during pregnancy
21
a) True
b) False - right lobe
c) False - indistinguishable on all pulse sequences
d) False - hypervascular. There is a significant risk of bleeding at biopsy
e) False - increases in size during pregnancy
- Causes of hepatic lesions with a central scar include:
a) Hepatic adenoma
b) Fibrolamellar hepatocellular carcinoma
c) Focal nodular hyperplasia
d) Giant cavernous haemangioma
e) Hepatic lymphoma
22
a) True
b) True
c) True
d) True
e) False
- Features of an annular pancreas include:
a) It occurs when part of the dorsal bud fails to atrophy
b) Associated with an imperforate anus
c) Usually involves the 3rd part of the duodenum
d) The ‘double-bubble’ sign is seen on plain abdominal radiograph
e) There is an increased incidence of peptic ulcers
23
a) False - occurs when part of the ventral bud fails to atrophy
b) True - other associations are tracheo-oesophageal fistula, oesophageal and duodenal atresia,
and Down’s syndrome
c) False - 85% involve the 2nd part of the duodenum, 15% involve 1st and 3rd
d) True
e) True - increased risk of peri-ampullary ulcers
- The following statements regarding primary sclerosing cholangitis is true:
a) It affects only the intrahepatic bile ducts
b) The common bile duct is usually spared
c) Echogenic portal triads are identified on ultrasound
d) There is a 10-15 times increased risk of developing cholangiocarcinoma
e) It is associated with positive antimitochondrial antibodies
24
a) False - intra and extrahepatic bile ducts are involved
b) False - almost always involved
c) True
d) True
e) False - feature of primary biliary cirrhosis
