Pancreatic Cancer
The most common type of pancreatic cancer is an adenocarcinoma, which typically forms at the head of the pancreas. This mass can cause compression of the bile duct, leading to obstructive jaundice. Risk factors for it include:
Smoking, Alcohol, Chronic Pancreatitis, T2DM, Obesity
Age, Family hx of pancreatic cancer
KRAS2 mutation (95%)
The main presenting symptom with this is painless, obstructive jaundice. The key differential to rule out with this is a Cholangiocarcinoma. Other presenting features include:
Epigastric pain
New-onset Diabetes (or worsening of it)
Steatorrhoea
Unintentional weight loss
Courvoisier’s Law - Palpable gallbladder + jaundice is unlikely to be due to gallstones, and is usually due to a cholangiocarcinoma or pancreatic cancer.
The paraneoplastic syndrome that occurs here is Trousseau’s. This is migratory thrombophlebitis that affects the extremities of the body.
N.B. Patients often presents very late due to its non-specific symptoms of malaise, weight loss, and nausea.
Investigations:
Abdomen USS - Good at detecting tumours at head, but not body/tail so a -ve result doesn’t rule out cancer
CT
CA19-9
LFTs
MRCP/ERCP
Management:
Palliative - stenting, chemoradiotherapy
Curative - Whipples procedure (pancreaticoduodenectomy)