11. Gallstones and Pancreatitis Flashcards
What are gallstones made from?
Bile and sometimes calcium
What imaging is used to see gallstones?
Ultrasound
Calcified can be seen on x ray
What is cholelithiasis?
Stones in the gallbladder
What is choledocholithiasis?
Stones in the common bile duct
What are the predisposing factors to gallstones?
Older, female
Obesity, diabetes, high fat diet
High oestrogen
Gall bladder hypomobility
What are the causes of gall bladder hypomobility?
Low CCK due to rapid weight loss, bariatric surgery
What conditions cause gallstones to be predominantly bilirubin/pigment stones?
Crohn’s disease (both bilirubin and cholesterol stones)
Cirrhosis
Haemolysis
Parasites
What are the symptoms of gallstones?
Biliary colic
RUQ or epigastric pain lasting 30 mins to 4 hours
Radiating to back and right shoulder
What is the differential for gallstones?
Dyspepsia Peptic ulcer disease Acute pancreatitis Oesophageal pain MI
What are the complications associated with gallstones?
Acute cholecystitis
CBD obstruction
Mirizzi syndrome
Gall bladder adenocarcinoma
What are the consequences of CBD obstruction?
Obstructive jaundice
Ascending cholangitis
Acute pancreatitis
What is Mirizzi Syndrome?
Obstruction to CBD by external compression from impacted gallstones
What is acute cholecystitis?
Cystic duct obstruction causes stasis in the gall bladder and secondary infection
What are the signs and symptoms of acute cholecystitis?
Fever, high WCC
Nausea, vomiting and RUQ pain for days
Positive Murphy’s sign
No jaundice
What is the treatment for acute cholecystitis?
Fluid, analgesia, antibiotics
Cholecystectomy
What complications are associated with acute cholecystitis?
Empyema, mucocoele
Risk perforation and peritonitis
Fistula with duodenum
What is chronic cholecystitis?
At autopsy gallbladder is chronically inflammed
Shrunken with thick muscle
Never symptomatic
What is the treatment for gallstones?
If symptomatic remove laproscopically
What are the causes of extrahepatic bile duct obstruction?
Gall stones in CBD
Tumour
Benign strictures (PSC)
Mirizzi syndrome
Which tumours can obstruct bile ducts?
Pancreatic adenocarcinoma
Extra-hepatic bile duct adenocarcinoma
Lymph node mets
How is extrahepatic bile duct obstruction investigated?
Dilated ducts can be seen above obstruction on ultrasound
MRCP (MRI for hepatic system)
What is the treatment for extrahepatic bile duct obstruction?
Remove stones or put in stent
What is ascending cholangitis?
Infection of static bile
What is Charcot’s triad of ascending cholangitis?
Fever
Pain
Jaundice
What is Reynold’s pentad of ascending cholangitis?
Charcot’s triad
Hypotension
Altered mental state
What are the causes of hepatic abscesses?
Biliary tract disease with ascending infection
Septic emboli
What are the effects of acute pancreatitis?
SIRS
Hypocalcaemia, hyperglycaemia
Ileus
Extensive necrosis, pseudocysts, fistula
What are the causes of acute pancreatitis?
Gall stones Alcohol Post ERCP Trauma, ischaemia, major surgery Drugs, viral Hyper calcium or lipids
What pain is associated with acute pancreatitis?
Epigastric pain radiating to back
What is the differential for acute pancreatitis?
MI
Ruptured AAA
Ischaemic organs
What blood test shows acute pancreatitis?
Amylase 3x higher than normal
What is the treatment for acute pancreatitis?
Resuscitate
Analgesia, fluids
nil PO
Treat complications, antibiotics, debridement
What is chronic pancreatitis?
Fibrosis and inflammation of pancreas
Function impaired and ducts distorted
What are the causes of chronic pancreatitis?
Alcohol
CF
What are the symptoms of chronic pancreatitis?
Dull epigastric pain radiating to back
Weight loss, steatorrhoea
Secondary DM
What is the treatment of chronic pancreatitis?
Analgesia
Enzyme supplements
Why is a pancreatic pseudocyst not a true cyst?
Not lined by epithelium
What are the causes of pancreatic pseudocyst?
Pancreatitis
Pancreatic surgery
Trauma
What complications are associated with pancreatic pseudocyst?
Pain/pressure
Infection
Erosion: blood vessel damage, fistula
What can be seen on histology in chronic pancreatitis?
Fibrosis
Cysts
Loss of functional acini