Chronic Pancreatitis management

Definition

Chronic pancreatitis is a progressive fibro-inflammatory disease of the pancreas characterized by irreversible structural damage, resulting in permanent impairment of exocrine and endocrine pancreatic function. Common causes include chronic alcohol use, smoking, genetic disorders, recurrent acute pancreatitis, pancreatic duct obstruction, autoimmune pancreatitis, and idiopathic disease.

Clinical Presentation

Symptoms

• Chronic or recurrent epigastric pain, often radiating to the back

• Recurrent episodes of acute pancreatitis

• Nausea and vomiting

• Loss of appetite

• Progressive weight loss

• Fat malabsorption (steatorrhea)

• Diarrhea due to exocrine pancreatic insufficiency

• Symptoms of diabetes mellitus (polyuria, polydipsia, weight loss)

Signs

• Epigastric tenderness

• Evidence of malnutrition

• Muscle wasting

• Features of fat-soluble vitamin deficiency

• Jaundice (if biliary obstruction occurs)

Investigations

Laboratory Investigations

• Full Blood Picture (FBP)

• Liver Function Tests (LFTs)

• Fasting blood glucose and/or HbA1c

• Serum electrolytes

• Serum calcium

• Serum triglycerides

• Fecal elastase (where available)

• Quantitative fecal fat estimation (if available)

Imaging Studies

• Abdominal ultrasonography

• Contrast-enhanced CT scan of the abdomen

• MRI/MRCP where available

• Endoscopic ultrasound (EUS) when diagnosis remains uncertain

Typical Imaging Findings

• Pancreatic calcifications

• Pancreatic duct dilatation or irregularity

• Pancreatic atrophy

• Pseudocysts

• Fibrotic changes

Complications

Exocrine Pancreatic Insufficiency

• Steatorrhea

• Malnutrition

• Fat-soluble vitamin deficiencies (A, D, E, K)

Endocrine Pancreatic Insufficiency

• Pancreatogenic (Type 3c) diabetes mellitus

Structural Complications

• Pancreatic pseudocysts

• Biliary obstruction

• Duodenal obstruction

• Splenic vein thrombosis

• Pancreatic cancer

Non-Pharmacological Management

• Complete abstinence from alcohol

• Smoking cessation

• Nutritional assessment and support

• Small frequent meals

• Low-fat diet in symptomatic patients

• Supplement fat-soluble vitamins when indicated

• Management by a multidisciplinary team when available

Pharmacological Treatment

Pain Management

Stepwise analgesic therapy according to pain severity:

A: Paracetamol (PO) 1 g 6–8 hourly when required

OR

B: Tramadol (PO) 50–100 mg 12 hourly when required

OR

C: Morphine (PO) according to pain severity and institutional protocol

Adjuvant Analgesics

For neuropathic or refractory pain:

A: Amitriptyline (PO) 25 mg nocte

OR

D: Pregabalin (PO) 75 mg nocte, titrated according to response

Management of Exocrine Pancreatic Insufficiency

Pancreatic Enzyme Replacement Therapy

S: Pancreatic enzyme replacement (PO) with meals and snacks according to formulation and clinical response.

The dose should be adjusted based on:

• Reduction in steatorrhea

• Weight gain

• Nutritional improvement

Nutritional Supplementation

• Fat-soluble vitamins (A, D, E, K) when deficient

• Calcium supplementation when indicated

• Nutritional rehabilitation for malnourished patients

Management of Diabetes Mellitus

Patients developing diabetes secondary to chronic pancreatitis should be managed according to diabetes treatment guidelines.

Refer to the Metabolic and Endocrine Disorders chapter.

Interventional and Surgical Management

Consider referral for endoscopic or surgical intervention in patients with:

• Persistent or refractory pain

• Pancreatic duct obstruction

• Large pancreatic duct stones

• Symptomatic pseudocysts

• Biliary obstruction

• Suspicion of malignancy

Available interventions include:

• Endoscopic pancreatic duct stenting

• Endoscopic stone extraction

• Extracorporeal shock wave lithotripsy (ESWL)

• Surgical drainage procedures (e.g., pancreaticojejunostomy)

• Pancreatic resection procedures in selected patients

Referral

Refer to a gastroenterologist or hepatopancreatobiliary (HPB) surgeon for:

• Diagnostic uncertainty

• Recurrent pancreatitis

• Severe malnutrition

• Refractory pain

• Pancreatic duct obstruction

• Suspected pancreatic malignancy

• Complex endocrine or exocrine insufficiency

Patient Education

• Abstinence from alcohol and smoking significantly slows disease progression.

• Adherence to pancreatic enzyme replacement improves nutrition and reduces steatorrhea.

• Regular follow-up is important for monitoring nutritional status and diabetes.

• Patients should seek medical attention for worsening pain, jaundice, unexplained weight loss, or recurrent vomiting.

Key Points

• Chronic pancreatitis causes irreversible pancreatic damage.

• Chronic pain, steatorrhea, and diabetes are the hallmark manifestations.

• Pancreatic enzyme replacement therapy is the cornerstone of managing exocrine insufficiency.

• Persistent pain may require endoscopic or surgical intervention.