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Chronic Pancreatitis
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Chronic Pancreatitis

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ICD-10

K86.1

Specialty

Gastroenterology

Onset

Chronic

Reviewed

July 2026
On This Page

Overview

  • It is a progressive and irreversible disease.
  • The most common cause is chronic heavy alcohol use, followed by pancreatic duct obstruction. About 30% of cases are idiopathic (no clear cause).
  • Patients may have:
    • Persistent or recurrent upper abdominal pain
    • Exocrine pancreatic insufficiency: steatorrhea (fatty stools), weight loss
    • Endocrine pancreatic insufficiency: prediabetes or diabetes

Etiology & Risk Factors

  • Chronic heavy alcohol use – the most common cause.
  • Smoking (tobacco use) – increases the risk in a dose-dependent manner.
  • Pancreatic duct obstruction – due to stones, strictures, or trauma.
  • Idiopathic – no identifiable cause (about 30% of cases).
  • Genetic (hereditary) factors – e.g., PRSS1, SPINK1, or CFTR gene mutations.
  • Autoimmune pancreatitis.
  • Metabolic disorders:
  • Severe hypertriglyceridemia
  • Hypercalcemia (usually from primary hyperparathyroidism)
  • Cystic fibrosis.
  • Recurrent acute or severe pancreatitis can progress to chronic pancreatitis.

Pathophysiology

Alcohol / smoking / duct obstruction / genetic mutations → Acinar cell injury or premature trypsin activation → Activation of pancreatic digestive enzymes inside the pancreas → Autodigestion of pancreatic tissue → Chronic inflammation → Activation of pancreatic stellate cells → Progressive fibrosis (scarring) → Permanent pancreatic damage → Loss of exocrine function (↓ digestive enzymes → maldigestion, steatorrhea) + Loss of endocrine function (↓ insulin → diabetes)

Clinical Presentation

  • Chronic or recurrent epigastric pain (most common symptom)
  • Pain radiates to the back
  • Pain worsens after eating and improves when leaning forward
  • Nausea and vomiting
  • Steatorrhea (fatty, greasy stools)
  • Weight loss due to malabsorption
  • Bloating, diarrhea, and abdominal cramps
  • Deficiency of fat-soluble vitamins (A, D, E, K)
  • Diabetes mellitus (from loss of insulin production)
  • In late-stage disease, some patients may have little or no pain despite significant pancreatic damage.
Chronic Pancreatitis Overview
Chronic Pancreatitis Overview

History Taking

  • Where is your abdominal pain? Does it spread to your back?
  • Is the pain worse after eating? Does leaning forward relieve it?
  • Is the pain recurrent or constant?
  • Have you noticed greasy, oily, or floating stools (steatorrhea)?
  • Have you lost weight without trying?
  • Do you have diabetes or symptoms of high blood sugar (increased thirst or urination)?
  • Do you drink alcohol? If yes, how much and for how long?
  • Do you smoke?
  • Have you ever had acute pancreatitis before?
  • Is there a family history of pancreatitis or cystic fibrosis?

Physical Examination

Assess for:

    • Epigastric tenderness
    • Abdominal tenderness on palpation
    • Abdominal distension (may be present)
    • Reduced bowel sounds if ileus develops
    • Weight loss
    • Signs of malnutrition
    • Muscle wasting (in advanced disease)
    • Signs of fat-soluble vitamin deficiency (A, D, E, K)
    • Signs of diabetes (e.g., dehydration, polyuria, polydipsia)
    • Jaundice if there is biliary obstruction
    • Features of chronic alcohol use may be present in some patients
    • Normal abdominal examination is possible in late-stage disease despite severe pancreatic damage

    -Key Examination Focus

    • Assess nutritional status
    • Check for epigastric tenderness
    • Look for jaundice
    • Assess for signs of diabetes and vitamin deficiencies

Investigations

Laboratory Tests

  • Serum lipase and amylase – often normal
  • CBC – assess for infection or anemia
  • Liver function tests (LFTs) – if biliary obstruction is suspected
  • Fasting blood glucose / HbA1c – assess for diabetes
  • Serum calcium – evaluate for hypercalcemia
  • Serum triglycerides – evaluate for hypertriglyceridemia
  • Fat-soluble vitamin levels (A, D, E, K) – assess nutritional deficiency

Pancreatic Function Tests

  • Fecal elastase-1 – best stool test for exocrine pancreatic insufficiency
  • 72-hour fecal fat test – confirms steatorrhea (if needed)

Imaging

  • Contrast-enhanced CT abdomen – first-line; shows pancreatic calcifications, duct dilation/strictures, and pancreatic atrophy
  • MRI/MRCP – more sensitive, especially in early disease
  • Abdominal ultrasound – may detect calcifications or duct stones (less sensitive)
  • Endoscopic ultrasound (EUS) – if CT/MRI are inconclusive
  • ERCP – not routinely used for diagnosis; mainly used when therapeutic intervention is needed

CT or MRI/MRCP is the most important investigation to confirm chronic pancreatitis.

Diagnosis

-Diagnosis is based on a combination of:

  • Clinical features: Chronic/recurrent epigastric pain radiating to the back, steatorrhea, weight loss, diabetes
  • Risk factors: Heavy alcohol use, smoking, recurrent acute pancreatitis, genetic causes
  • Imaging (most important):
    • CT abdomen (first-line)
    • MRI/MRCP (more sensitive in early disease)
    • Findings: Pancreatic calcifications, duct dilation/strictures, pancreatic atrophy
  • Pancreatic function tests:
    • Fecal elastase-1 ↓ → supports exocrine pancreatic insufficiency
  • Laboratory tests:
    • Lipase and amylase are often normal and do not confirm or exclude chronic pancreatitis.
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Related Topics

Management

Lifestyle modification

  • Stop alcohol and smoking
  • Patient education and regular follow-up

Pain management

  • Paracetamol or NSAIDs first-line
  • Adjuvant drugs if needed
  • Opioids only if pain is severe and refractory

Pancreatic enzyme replacement (PERT)

  • Give with meals
  • Improves digestion and reduces steatorrhea

Nutritional support

  • Small, frequent meals
  • Low-fat diet
  • Replace fat-soluble vitamins (A, D, E, K) if deficient

Treat complications

  • Manage diabetes
  • Correct nutritional deficiencies

Treat the underlying cause (e.g., alcohol use disorder, hypertriglyceridemia)

Endoscopic or surgical treatment

  • For duct stones/strictures, persistent pain, or other complications not controlled medically

Complications

    • Recurrent acute pancreatitis
    • Exocrine pancreatic insufficiency → steatorrhea, malabsorption, weight loss
    • Endocrine pancreatic insufficiency (Type 3c diabetes mellitus)
    • Pancreatic pseudocyst
    • Pancreatic ascites
    • Pancreatic abscess
    • Portal vein thrombosis
    • Splenic vein thrombosis
    • Biliary obstruction and jaundice
    • Pancreatic cancer (especially in hereditary pancreatitis)

    The most common long-term complications are exocrine insufficiency (malabsorption), diabetes, and pancreatic pseudocysts.

Prognosis

  • Chronic pancreatitis is a progressive, irreversible disease.
  • Prognosis depends largely on alcohol cessation and smoking cessation.
  • Many patients develop chronic pain, malabsorption, and diabetes over time.
  • Severe disease may require endoscopic or surgical intervention.
  • Prognosis is worse in patients with ongoing alcohol use, smoking, or end-stage liver disease.
  •  

Key Points / Clinical Pearls

  • Chronic pancreatitis is a progressive, irreversible inflammation of the pancreas.
  • Heavy alcohol use is the most common cause; smoking is a major risk factor.
  • Presents with chronic epigastric pain radiating to the back, steatorrhea, weight loss, and diabetes.
  • CT abdomen is the first-line imaging test; pancreatic calcifications are a classic finding.
  • Serum amylase and lipase are often normal in chronic pancreatitis.
  • Fecal elastase-1 is the preferred test for exocrine pancreatic insufficiency.
  • Management includes alcohol and smoking cessation, pain control, pancreatic enzyme replacement (PERT), nutritional support, and treatment of diabetes.
  • Endoscopic or surgical treatment may be needed for persistent pain or complications.
  • Common complications include malabsorption, diabetes, pancreatic pseudocysts, and pancreatic cancer (especially in hereditary disease).
  •  
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