Surgery of Pancreatic Disorders Flashcards
What are examples of pancreatic disorders?
Pancreatic cancer
Acute pancreatitis
Chronic pancreatitis
Intraductal papillary mucinous neoplasm (IPMN) and pancreatic cystic disease
What does IPMN stand for?
Intraductal papillary mucinous neoplasm
What is the incidence of pancreatic cancer in the UK?
10/100000
What age group is pancreatic cancer most common in?
60-80 years old
What is the male:female ratio of pancreatic cancer?
3:4
What is the 5 year survival rate of pancreatic cancer?
0.4%
What are risk factors for pancreatic cancer?
Smoking
Chronic pancreatitis
Adult onset of diabetes
Hereditary pancreatitis
Inherited predisposition
What is the presentation of pancreatic cancer?
Obstructive jaundice
Diabetes
Abdominal pain/back pain
Anorexia
Vomiting
Weight loss
Recurrent bouts pancreatitis
What investigations are done for pancreatic cancer?
Blood tests
Chest x-ray
Tumour markers (CA19-9)
Imaging/invasive investigations
What antigen is released by cancerous pancreatic cells that can be tested for?
CA19-9
What imaging/invasive tests can be done to investigate pancreatic cancer?
CXR
USS
CT
MRCP
Laparoscopic USS
Peritoneal cytology
Percutaneous needle biopsy
PET scan
What is considered when considering if a patient with pancreatic cancer is fit for pancreatic resection?
Basic history and examination
Chest x-ray and ECG
Respiratory function tests
Physiological scoring system
What types of surgery can be done for pancreatic cancer?
Kausch-Whipple
Pylorus-preserving pancreaticoduodenectomy (PPPD)
Palliative drainage
Metal stenting
What does PPPD stand for?
Pylorus-preserving pancreaticoduodenectomy
What is a pylorus-preserving pancreaticoduodenectomy
Similar to Whipples operation but none of the stomach is removed
What is Kausch-Whipple surgery?
Removes head of pancreas, bile duct, gallbladder and the duodenum
What is Kausch-Whipple surgery also known as?
Pancreaticoduodectomy
What is acute pancreatitis?
An acute inflammatory process of the pancreas with involvement of other regional tissues or remote organ systems
What are the different classifications of acute pancreatitis?
Mild AP
Severe AP
What is mild acute pancreatitis associated with?
Minimal organ dysfunction and uneventful recovery
What is severe acute pancreatitis associated with?
Organ failure or local complication
What are some local complications of acute pancreatitis?
Acute fluid collection
Pseudocyst
Pancreatic abscess
Pancreatic necrosis
What is the aetiology of acute pancreatitis?
Gallstones
Alcohol
Viral infections (CMV, mumps)
Tumours
Anatomical abnormalities
ERCP
Lipid abnormalities
Hypercalcaemia
Postoperative trauma
Ischaemia
Drugs
Scorpion venom
Idiopathic
What viral infections can cause acute pancreatitis?
CMV
Mumps
What does CMV stand for?
Cytomegalovirus
What is the pathophysiology of acute pancreatitis caused by alcohol?
Direct injury
Increased sensitivity to stimulation
Oxidation products (acetaldehyde)
Non-oxidative metabolism (fatty acid ethyl esters)
What is the pathophysiology of pancreatitis caused by gallstones?
Passage of gallstone is essential
Raised pancreatic ductal pressure
What is the pathophysiology of acute pancreatitis caused by ERCP?
Increased pancreatic duct pressure
What are some symptoms of acute pancreatitis?
Abdominal pain
Nausea, vomiting
Collapse
What are some signs of acute pancreatitis?
Pyrexia
Dehydration
Abdominal tenderness
Circulatory failure
What does the management of acute pancreatitis involve?
General supportive care (analgesia, IV fluids, cardiovascular, respiratory and renal support)
Monitoring (pulse, BP, urine output, CVP, arterial line, HDU/ITU)
Investigations
What should be monitored when managing acute pancreatitis?
Pulse, BP
Urine output
Central venous pressure (CVP)
Arterial line
HDU/ITU
What investigations should be done for acute pancreatitis?
U/E, glucose
Serum amylase
FBC, clotting
LFT ABG
Chest x-ray, abdomen x-ray
USS
CT scan
What critera does preducting severity of acute pancreatitis use?
Glasgow criteria
In the Glasgow criteria, what score inidcates severe acute pancreatitis?
3 or more
What does the Glasgow criteria check?
Glucose
Serum calcium
White cel count
Albumin
LDH
Urea
AST/ALT
Arterial pO2
What glucose level gives a score of 1 on the Glasgow criteria?
>10mmol/L
What serum calcium level gives a score of 1 on the Glasgow criteria?
<2mmol/L
What white cell count gives a score of 1 on the Glasgow criteria?
>1500/mm3
What albumin level gives a score of 1 on the Glasgow criteria?
<32g/L
What LDH level gives a score of 1 on the Glasgow criteria?
>700IU/L
What urea level gives a score of 1 on the Glasgow criteria?
>16mmol/L
What AST/ALT level gives a score of 1 on the Glasgow criteria?
>200IU/L
What arterial pO2 level gives a score of 1 on the Glasgow criteria?
<60mmHg
As well as the Glasgow criteria, what else can be used to predict the severity of acute pancreatitis?
Clinical assessment
CT scanning
Individual markers (CRP, IL-6)
How is acute pancreatitis due to cholelithiasis managed?
ERCP and ES,
Cholecystectomy
How is acute pancreatitis due to alcohol managed?
Abstinence
Counselling
How is acute pancreatitis due to ischaemia managed?
Careful support
How is acute pancreatitis due to malignancy managed?
Resection or bypass
How is acute pancreatitis due to hyperlipidaemia managed?
Diet
Lipid lowering drugs
How is acute pancreatitis due to anatomical abnormalities managed?
Correction if possible
How is acute pancreatitis due to cholelithiasis managed?
Stop or change
What are specific aspects of managing acute pancreatitis?
CT scanning
Antibiotics
Diagnosis of infection
ERCP in gallstone pancreatitis
Nutrition
Manipulation of inflammatory response
What kind of complications from acute pancreatitis can be picked up by CT scanning?
Acute fluid collections
Abscess
Necrosis
Monitoring progress of disease
What is used to diagnose infection with acute pancreatitis?
CT guided FNA or pancreatic necrosis
What is CT guided FNA?
CT guided fine needle aspiration
What is the definitive management of acute pancreatitis summarised?
Prevention of recurrent attacks
Fluid collection
Management of necrosis
Managment of complications
What management is used to prevent further attacks of acute pancreatitis?
Management of gallstones
Investigations of non-gallstones pancreatitis
Alcohol abstinence
How is necrosis due to acute pancreatitis managed?
Laparotomy
What are examples of different kinds of necrosis due to acute pancreatitis?
Sterile necrosis
Infected necrosis
Abscess
What are examples of different kinds of late complications due to acute pancreatitis?
Haemorrhage
Portal hypertension
Pancreatic duct stricture
What is chronic pancreatitis?
Continuing chronic inflammatory process of the pancreas characterised by irreversible morphological changes leading to chronic pain and/or impairment of endocrine and exocrine function of the pancreas
How does the incidence of males and females compare for chronic pancreatitis?
Males greater than females
What are some causes of chronic pancreatitis?
Obstruction of the main pancreatic duct
Autoimmune
Toxin
Idiopathic
Genetic
Environmental
Recurrent injuries
What are examples of things that can cause obstruction of the main pancreatic duct?
Tumour (adenocarcinoma, IPMT)
Sphincter of Oddi dysfunction
Pancreatic divisum
Duodenal obstruction (tumour, diverticulum)
Trauma
Stricture
What is pancreatic divisum?
Congenital abnormality where a single pancreatic duct is not formed but remains as a ventral and dorsal duct
What are examples of toxins that can cause chronic pancreatitis?
Ethanol
Smoking
Drugs
What are examples of genetic causes of chronic pancreatitis?
Autosomal dominant (codon 29 and 122)
Autosomal ressesive (CFTR, SPINK1, codon A)
What are examples of recurrent injuries that can cause chronic pancreatitis?
Biliary
Hyperlipidaemia
Hypercalcaemia
What are clinical features of chronic pancreatitis?
Pain
Pancreatic exocrine insufficiency
Diabetes
Jaundice
Duodenal obstruction (uncommon)
Upper GI haemorrhage
What investigations are done for chronic pancreatitis?
Appropriate imaging (CT scan, ERCP/MRCP)
Pancreatic exocrine function (used infrequently)
What is done to look at pancreatic exocrine function?
Faecal/serum enzymes (elastase)
Pancreolauryl test (enzyme response to stimulus)
What is the management of chronic pancreatitis?
Counselling
Abstinence from alcohol
Management of acute attacks
Analgesia
Avoid high fat, high protein diet
Surgery
What are some possible complications of chronic pancreatitis that requires surgery to fix?
Pancreatic duct stenosis
Cyst/pseudocysts
Biliary tract obstruction
Splenic vein thrombosis/gastric varices
Portal vein compression/mesenteric vein thrombosis
Duodenal stenosis
Colonic stricture
What interventional procedures can be done for treatment of chronic pancreatitis?
CBD stenting or bypass
Thoracoscopic splanchnectomy
Caeliac plexus block
What procedures can be done for pancreatic duct stenosis and obstruction?
Endoscopic PD sphincterotomy, dilation and lithotripsy
What are the different approaches for a caeliac plexus block?
Classic trans-crural
Trans-aortic
Anterior approach
What are different ways of guiding a caeliac plexus block?
CT guided
EUS guided
Fluoroscopy guided
What surgery can be done for drainage during chronic pancreatitis?
Pancreatic duct sphincteroplasty
Rochelle modification
What surgery can be done for resection during chronic pancreatitis?
DPPHR
PPPD
Whipple’s pancreaticoduodectomy
Frey procedure
Spleen-preserving distal pancreatectomy
Central pancreatectomy
What does DPPHR stand for?
Duodenal preserving pancreatic head resection
What is mucinous cystic neoplasia of the pancreas?
Mucin producing and septated cyst forming epithelial neoplasia of the pancreas with distincive ovarian type stroma
What is stroma?
Part of an organ or tissue with a structural or connective role
What does MCN stand for?
Mucinous cystic neoplasia of the pancreas
What is another condition similar to MCN?
Intraductal papillary mucinous neoplasm (IPMN)
What does IPMN stand for?
Intraductal papillary mucinous neoplasm
What are different kinds of IPMN?
MD-IPMN (main duct)
BD-IPMN (biliary duct)
What are worrisome features of MD-IPMN?
Main pancreatic duct 5-9mm
Non-enhanced mural nodule
Abrupt change in main pancreatic duct
Lymph nodes involvement
When is IPMN considered high risk?
MPD > 10mm
Enhanced solid component
When is MCN considered high risk?
>1cm with enhanced solid component
Main pancreatic duct >1cm
What are worrisome features of MCN?
>3cm
Enhanced cyst wall
Non-enhanced nodules
What are indications for resection for MD-IPMN?
Always indicated
What are indications for resection for BD-IPMN?
In elderly >3cm without high risk
In younger patients >2cm may be considered
What are indications for resection for MCN?
All MCN in fit patients are indicated
What are methods of IPMN and MCN resection?
Pancreatectomy
Focal and LN or spleen sparing (laparoscopic, robotic, multifocal BD-IPMN)