MRCP2 Flashcards
Ulcer: Pain relieved by eating
Duodenal ulcer
Ulcer: Pain while eating?
Gastric ulcer
What is Cullen’s sign?
Periumbilical discolouration (Cullen’s sign)
What is grey turner’s sign ?
flank discolouration (Grey-Turner’s sign)
Tinkling bowel sounds?
Intestinal obstruction
Cause if achalasia?
degenerative loss of ganglia from Auerbach’s plexus
Features of achalsia?
dysphagia of BOTH liquids and solids
typically variation in severity of symptoms
heartburn
regurgitation of food
may lead to cough, aspiration pneumonia etc
malignant change in small number of patients
Best investigation for achalasia?
LOS manometry
barium swallow
shows grossly expanded oesophagus, fluid level
‘bird’s beak’ appearance
chest x-ray
wide mediastinum
fluid level
Surgery of choice for achalasia?
pneumatic (balloon) dilation
If recurrent symptoms: Heller cardiomyotomy
Pancreatitis causes?
Gallstones
Ethanol
Trauma
Steroids
Mumps (other viruses include Coxsackie B)
Autoimmune (e.g. polyarteritis nodosa), Ascaris infection
Scorpion venom
Hypertriglyceridaemia, Hyperchylomicronaemia, Hypercalcaemia, Hypothermia
ERCP
Drugs (azathioprine, mesalazine*, didanosine, bendroflumethiazide, furosemide, pentamidine, steroids, sodium valproate)
Upper GI bleed: Oesphagitis?
Small volume of fresh blood, often streaking vomit. Malena rare. Often ceases spontaneously. Usually history of antecedent GORD type symptoms.
mall to moderate volume of bright red blood + repeat vomiting
Mallory weiss syndrome
NSAID use + haematemesis + epigastric discomfort
Diffuse erosive gastritis
Usually haematemesis and epigastric discomfort. Usually there is an underlying cause such as recent NSAID usage. Large volume haemorrhage may occur with considerable haemodynamic compromise
What artery is often implicated in duodenal ulcer ?
Gastroduodenal
Previous aortic surgery + major haemorrhage?
Aorto-enteric fistula
Constitutional symptoms + dyspepsia +/- major haeemorhage
Gastric cancer
How to risk stratify patient with haematemesis?
Blatchford scale
helps clinicians decide whether patient patients can be managed as outpatients or not
How to assess mortality of patient AFTER ENDOSCOPY?
rockall score is used after endoscopy
provides a percentage risk of rebleeding and mortality
includes age, features of shock, co-morbidities, aetiology of bleeding and endoscopic stigmata of recent haemorrhage
When is a platelet transfusion needed in haematemesis?
> 50
When is FFP needed in major haemorrhage?
fibrinogen level of less than 1 g/litre, or a prothrombin time (international normalised ratio) or activated partial thromboplastin time greater than 1.5 times normal
Management of non-variceal bleeding?
PPIs should be given to patients with non-variceal upper gastrointestinal bleeding and stigmata of recent haemorrhage shown at endoscopy
Management of variceal bleeding?
terlipressin and prophylactic antibiotics should be given to patients at presentation (i.e. before endoscopy)
Management of gastric varices?
band ligation should be used for oesophageal varices and injections of N-butyl-2-cyanoacrylate for patients with gastric varices
If varcies are not managed with band ligation or N-butyl-2-cyanoacrylate?
transjugular intrahepatic portosystemic shunts (TIPS) should be offered if bleeding from varices is not controlled with the above measures
What are the types of alcoholic liver disease?
alcoholic fatty liver disease
alcoholic hepatitis
cirrhosis
What is the classic LFT picture for alcoholic liver disease?
gamma-GT is characteristically elevated
AST:ALT is normally > 2, a ratio of > 3 is strongly suggestive of acute alcoholic hepatitis
Management of alcoholic liver disease?
Prednisolone
pentoxyphylline
What is alkaptonuria?
rare autosomal recessive disorder of phenylalanine and tyrosine metabolism
lack of the enzyme homogentisic dioxygenase (HGD)
Features of alkaptonuria?
pigmented sclera
urine turns black if left exposed to the air
intervertebral disc calcification may result in back pain
renal stones
Multi-level intervertebral disc calcification with disc space narrowing
Treatment of alkaptonuria?
high-dose vitamin C
dietary restriction of phenylalanine and tyrosine
What is the side effect of sulphasalazine?
rashes, oligospermia, headache, Heinz body anaemia, megaloblastic anaemia, lung fibrosis
What is the difference between sulphasalaine and mesalazine?
Mesalazine –> delayed release 5 ASA
Side effect of mesalazine?
GI upset, headache, agranulocytosis, pancreatitis*, interstitial nephritis
Which 5 ASA causes pancreatitis?
Mesalazine
Management of angiodysplasia?
endoscopic cautery or argon plasma coagulation
antifibrinolytics e.g. Tranexamic acid
oestrogens may also be used
Most common organism to cause ascending cholangitis?
E coli
Features of ascending cholangitis?
Charcot’s triad of right upper quadrant (RUQ) pain, fever and jaundice occurs in about 20-50% of patients
hypotension and confusion are also common (the additional 2 factors in addition to the 3 above make Reynolds’ pentad)
Management of ascending cholangitis?
intravenous antibiotics
endoscopic retrograde cholangiopancreatography (ERCP) after 24-48 hours to relieve any obstruction
What does a SAAG > 11 indicate typically?
Portal vein hypertension
Causes of high SAAG ascites?
Liver disorders are the most common cause
cirrhosis/alcoholic liver disease
acute liver failure
liver metastases
Cardiac
right heart failure
constrictive pericarditis
Other causes
Budd-Chiari syndrome
portal vein thrombosis
veno-occlusive disease
myxoedema
Causes of low SAAh ascites?
Hypoalbuminaemia
nephrotic syndrome
severe malnutrition (e.g. Kwashiorkor)
Malignancy
peritoneal carcinomatosis
Infections
tuberculous peritonitis
Other causes
pancreatitisis
bowel obstruction
biliary ascites
postoperative lymphatic leak
serositis in connective tissue diseases
What is the risk of drainage of a large volume ascites?
paracentesis induced circulatory dysfunction can occur due to large volume paracentesis (> 5 litres). It is associated with a high rate of ascites recurrence, development of hepatorenal syndrome, dilutional hyponatraemia, and high mortality rate
What should be offered to patients as a prophylaxis of ascites > 15G/L
Offer prophylactic oral ciprofloxacin or norfloxacin for people with cirrhosis and ascites with an ascitic protein of 15 g/litre or less, until the ascites has resolved’
HLA type associated with autoimmune hepatitis?
HLA B8
HLA DR3.
What are the three types of autimmune hepatitis?
Type 1 –> ANA + Smooth muscle antibody
Type 2 –> Anti-liver/kidney microsomal type 1 antibodies (LKM1)
Type 3 –> Soluble liver-kidney antigen
What autimmune hepatitis affects both adults and children?
Type 1
What autoimmune hepatitis only affects children?
Type 2
What autoimmune hepatitis only affects adults?
Type 3
Features of autoimmune hepatitis?
acute hepatitis: fever, jaundice etc (only 25% present in this way)
amenorrhoea (common)
liver biopsy: inflammation extending beyond limiting plate ‘piecemeal necrosis’, bridging necrosis
Management of autoimmune hepatitis?
- Prednisolone
- Liver transplant
What can bile acid malabsorption lead to?
Steatorrhea
Malabsorption of vitamins A, D, E, K
Causes of bile acid malabsorption?
cholecystectomy
coeliac disease
small intestinal bacterial overgrowth
Investigation of choice for bile acid malabsorption?
SeHCAT
- nuclear mediciune scan
- scans are done 7 days apart rto see loss of radioactive isotope
Management of bile acid malabsorption?
cholestyramine
What is the triad of budd chiari?
abdominal pain: sudden onset, severe
ascites → abdominal distension
tender hepatomegaly
What does barret’s oesphagus refer to?
Metaplasia of LOS from squamous –> columnar
of oesophageal adenocarcinoma, estimated at 50-100 fold
Risk factors for Barret’s oesphagus?
gastro-oesophageal reflux disease (GORD) is the single strongest risk factor
male gender (7:1 ratio)
smoking
central obesity
Is alcohol a risk factor for Barret’s?
It is not an independent risk factor
Management of Barret’s?
High dose PPI
Endoscopy every 3-5 years
How do you manage dysplasia found in Barret’s?
dysplasia of any grade is identified endoscopic intervention is offered. Options include:
radiofrequency ablation:
Identify bleeding source when OGD + colonoscopy fail?
Capsule endoscopy
Features of carcinoid tumour?
flushing (often the earliest symptom)
diarrhoea
bronchospasm
hypotension
right heart valvular stenosis (left heart can be affected in bronchial carcinoid)
May also secrete:
- ACTH –> Cushings
Pellagra
Investigations for carcinoid tumour?
urinary 5-HIAA
plasma chromogranin A y
Management of carcinoid tumour?
somatostatin analogues e.g. octreotide
diarrhoea: cyproheptadine may help
Mechanism of cholesytramine?
decreases bile acid reabsorption in the small intestine, therefore upregulating the amount of cholesterol that is converted to bile acid.
What is the main action of cholestyramine ?
Reduces LDL cholesterol
What are the adverse effects of cholestyramine?
abdominal cramps and constipation
decreases absorption of fat-soluble vitamins
cholesterol gallstones
may raise level of triglycerides
Crohns disease bowel resection + diarrhoea - how to manage?
Cholestryamine
Genetic causes of chronic pancreatitis?
genetic: cystic fibrosis, haemochromatosis
Ductal causes of chronic pancreatitis?
ductal obstruction: tumours, stones, structural abnormalities including pancreas divisum and annular pancreas
What is the features of chronic pancreatitis?
pain is typically worse 15 to 30 minutes following a meal
steatorrhoea: symptoms of pancreatic insufficiency usually develop between 5 and 25 years after the onset of pain
diabetes mellitus develops in the majority of patients. It typically occurs more than 20 years after symptom begin
What medication is a risk factor for clostrium difficle?
PPI’s
What is the gram stain of c difficle?
anaerobic gram-positive, spore-forming, toxin-producing bacillus
Major complication of C difficle?
Toxic megacolon
Features of moderate C difficle?
↑ WCC ( < 15 x 109/L)
Typically 3-5 loose stools per day
Features of severe C difficle?
↑ WCC ( > 15 x 109/L)
or an acutely ↑ creatinine (> 50% above baseline)
or a temperature > 38.5°C
or evidence of severe colitis(abdominal or radiological signs)
Features of life threatening C difficle?
Hypotension
Partial or complete ileus
Toxic megacolon, or CT evidence of severe disease
Treatment during first episode of C difficle?
first-line therapy is oral vancomycin for 10 days
second-line therapy: oral fidaxomicin
third-line therapy: oral vancomycin +/- IV metronidazole
Treatment during recurrent episode of C difficle?
recurrent infection occurs in around 20% of patients, increasing to 50% after their second episode
within 12 weeks of symptom resolution: oral fidaxomicin
after 12 weeks of symptom resolution: oral vancomycin OR fidaxomicin
Management of life threatening C difficile?
oral vancomycin AND IV metronidazole
specialist advice - surgery may be considered
Two episode of recurrent C difficile management?
faecal microbiota transplant
Complications of Coeliac disease?
anaemia: iron, folate and vitamin B12 deficiency (folate deficiency is more common than vitamin B12 deficiency in coeliac disease)
hyposplenism
osteoporosis, osteomalacia
lactose intolerance
enteropathy-associated T-cell lymphoma of small intestine
subfertility, unfavourable pregnancy outcomes
Associated conditions of coeliac disease?
Autoimmune thyroid disease
Dermatitis herpetiformis
Irritable bowel syndrome
Type 1 diabetes
First-degree relatives (parents, siblings or children) with coeliac disease
HLA type assocaited with coeliac disease?
HLA-DQ2 (95% of patients)
HLA-DQ8 (80%).
What do patients need to be doing before coeliac disease ?
Must be eating gluten 6 weeks prior to test
What is the first line serology test for coeliac?
Anti TTG (IgA)
What must be tested with other coeliac serology ? And why?
endomyseal antibody (IgA)
+
Selective IgA deficiency - may give false positive
What is the gold standard diagnosis of coeliac disease?
the ‘gold standard’ for diagnosis - this should be performed in all patients with suspected coeliac disease to confirm or exclude the diagnosis
Findings on biopsy that are consistent with coeliac disease ?
villous atrophy
crypt hyperplasia
increase in intraepithelial lymphocytes
lamina propria infiltration with lymphocytes
What are the ways of diagnosis colon cancer - what is gold standard?
Goldstandard: Colonoscopy
Other options:
double-contrast barium enema and CT colonography.
How is colon cancer stages?
CT chest abdomen pelvis
How is rectal cancer staged?
rectal cancer will also undergo evaluation of the mesorectum with pelvic MRI scanning.
Tumour marker for colon cancer?
CEA
Gene mutation in HNPCC?
Lynch syndrome
MSH2 (60% of cases)
MLH1 (30%)
Affect genes involved in DNA mismatch repair leading to microsatellite instability
Inheritance of HNPCC?
Autosomal dominant
Other causes associated in HNPCC ( Lynch) ?
Endometrial
Stomach,
Liver,
Kidney,
Brain, and.
Certain types of skin cancers.
Amsterdam criteria for lynch syndrome?
at least 3 family members with colon cancer
the cases span at least two generations
at least one case diagnosed before the age of 50 years
Mutation in FAP ?
tumour suppressor gene called adenomatous polyposis coli gene (APC), located on chromosome 5
Feature of Gardner’s syndrome?
osteomas of the skull and mandible
retinal pigmentation
thyroid carcinoma
epidermoid cysts on the skin
COlonic polyps
Variant of FAP
Most common type of mutation in sporadic colorectal carcinoma?
Loss of APC
Others include loss of P53 and K-ras
FIT test results?
5 out of 10 patients will have a normal exam
4 out of 10 patients will be found to have polyps which may be removed due to their premalignant potential
1 out of 10 patients will be found to have cancer
Who is bowel screening done on?
ffering screening every 2 years to all men and women aged 60 to 74 years in England, 50 to 74 years in Scotland
Investigation findings in crohn’s?
raised inflammatory markers
increased faecal calprotectin
anaemia
low vitamin B12 and vitamin D
Extra-instestinal manifestations related to disease activity in IBD?
Arthritis: pauciarticular, asymmetric
Erythema nodosum
Episcleritis
Osteoporosis
Most common extra-intestinal manifestation in crohn’s disease?
Arthritis
Extra-instestinal manifestations not related to disease activity in IBD?
Arthritis: polyarticular, symmetric
Uveitis
Pyoderma gangrenosum
Clubbing
Primary sclerosing cholangitis
IBD: Uveitis ?
UC
IBD: episcleritis
Crohn’s
IBD: Primary sclerosis cholangitis ?
UC
IBD: Goblet cell + Granuloma?
Crohn’s
Histology in crohn’s disease ?
inflammation in all layers from mucosa to serosa
goblet cells
granulomas
Small bowel enema for crohn’s disease?
high sensitivity and specificity for examination of the terminal ileum
strictures: ‘Kantor’s string sign’
proximal bowel dilation
‘rose thorn’ ulcers
fistulae
What marker can be used to correlate disease in crohn’s?
CRP
Crohns + smoking
Exacerbates
UC + smoking
Protects
How to induce remission in crohns’ disease?
Firstline: Glucocorticoids or Budesonide
Secondline: 5-ASA drugs (e.g. mesalazine)
What drugs can be added in to help induce remission on crohn’s, but cannot be monotherapy?
Can also be used to maintain remission
azathioprine or mercaptopurine
Methotrexate
Disease refractory crohn’s management?
Infliximab
Fistulating crohn’s management
Infliximab
Management of isolated perianal disease in corhn’s ?
Metronidazole
Imaging of choice for suspected perianal disease?
MRI
Management of complex fistula in crohn’s disease?
draining seton is used for complex fistulae
Management of stricturing iela disease ?
ileocaecal resection
What test should be done before starting azathiorpine / metacaptopurine ?
assess thiopurine methyltransferase (TPMT) activity before offering azathioprine or mercaptopurine
Signs of decompensated liver disease?
Asterixis
Jaundice
Hepatic encephalopathy
Constructional apraxia (ask to draw a clock face)
Causes of decompensated liver disease?
Infection - pneumonia, spontaneous bacterial peritonitis, viruses (hepatitis B, C)
Drugs - paracetamol, anaesthetic agents
Toxin - alcohol, Amanita phalloides mushroom
Vascular - Budd-Chiari syndrome, vena-occlusive disease
Haemorrhage - Upper gastrointestinal bleed
Constipation
Management of decompensated liver disease?
Enhance nitrate clearance with phosphate enemas
Aim for 3 stools per day
Use lactulose : lactulose to enhance binding of nitrate in the intestine.
Definitions of diarrhoea?
Diarrhoea: > 3 loose or watery stool per day
Acute diarrhoea < 14 days
Chronic diarrhoea > 14 days
What is the most common cause of diarrhoea in children?
Rotavirus
Most common cause of chroic diarrhoea in infants?
cows’ milk intolerance
Undigested food + diarrhoea?
Toddler’s diarrhoea
Barium swallow + corkscrew appearance?
Diffuse oesphageal spasm
Treatment of diverticulitis?
if the symptoms don’t settle within 72 hours, or the patient initially presents with more severe symptoms, the patient should be admitted to hospital for IV antibiotics
Drugs that cause a hepatocellular picture?
paracetamol
sodium valproate, phenytoin
MAOIs
halothane
anti-tuberculosis: isoniazid, rifampicin, pyrazinamide
statins
alcohol
amiodarone
methyldopa
nitrofurantoin
Drug that cause a cholestatic picture?
combined oral contraceptive pill
antibiotics: flucloxacillin, co-amoxiclav, erythromycin*
anabolic steroids, testosterones
phenothiazines: chlorpromazine, prochlorperazine
sulphonylureas
fibrates
rare reported causes: nifedipine
Drugs that cause cirrhosis?
methotrexate
methyldopa
amiodarone
What is Dubin Johnson syndrome?
benign autosomal recessive disorder hyperbilirubinaemia (conjugated, therefore present in urine)
defect in the canillicular multispecific organic anion transporter (cMOAT) protein
Dysphagia: Odonophagia + no weight loss + GORD
Oesophagitis
Dysphagia: HIV / steroid use ?
Oesophageal candidiasis
Pharyngeal pouch
More common in older men
Represents a posteromedial herniation between thyropharyngeus and cricopharyngeus muscles
Usually not seen but if large then a midline lump in the neck that gurgles on palpation
Typical symptoms are dysphagia, regurgitation, aspiration and chronic cough. Halitosis may occasionally be seen
Management for feeding > 4 weeks?
Gastric feeding > 4 weeks consider long-term gastrostomy
Complications of enteral feeding?
diarrhoea
aspiration
metabolic
hyperglycaemia
refeeding syndrome
Risk factor of developing eosinophilic oesphagitis?
Allergies/ asthma: suffering from food/ environmental allergies or atopic dermatitis and asthma increases the risk of diagnosis
Male sex
Family history of eosinophilic oesophagitis or allergies
Caucasian race
Age between 30-50
Coexisting autoimmune disease e.g. coeliac disease
Gold standard diagnosis of eosinophilic oesphagitis?
Endoscopy: diagnosis can only be made on the histological analysis of an oesophageal biopsy.
Oesphagus: epithelial desquamation, eosinophilic microabscesses, and abnormally long papillae
Eosinophilic oesphagitis
Management of eosinophilic oesphagitis?
Dietary modification
Topical steroids e.g. fluticasone and budesonide
Oesphageal dilitation
Causes of raised calprotectin?
bowel malignancy
coeliac disease
infectious colitis
use of NSAIDs