Chronic pancreatitis
Chronic pancreatitis is irreversible fibro-inflammatory destruction of the pancreas that produces abdominal pain along with exocrine and endocrine insufficiency, most often from long-term alcohol use in adults and cystic fibrosis in children. Diagnosis rests on CT or MRI showing calcifications and ductal change, and management combines alcohol and tobacco cessation, staged analgesia, pancreatic enzyme replacement, and endoscopic or surgical drainage for ductal obstruction.
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What this article covers
- Overview
Definition: chronic pancreatitis is irreversible fibro-inflammatory pancreatic destruction, with distorted architecture, loss of acinar and islet parenchyma, and pain plus exocrine and endocrine insufficiency.
- Epidemiology
Alcohol-associated disease: the leading identifiable adult cause, though fewer than 3% of heavy drinkers ever develop chronic pancreatitis, and in the largest North American cohort only 46% of…
- Risk factors
Toxic-metabolic: alcohol (strongest modifiable factor), tobacco, hypercalcemia, hypertriglyceridemia, and chronic kidney disease.
- Pathophysiology
Persistent inflammatory injury: the inflammatory response that follows acute pancreatitis fails to resolve and instead persists, activating pancreatic stellate cells that drive progressive fibrosis…
- Clinical features
Abdominal pain: the most common presenting symptom, seen in about 85% of patients; epigastric pain, often radiating to the back, ranging from constant daily pain to intermittent severe attacks, though a minority of patients have no pain.
- Differential diagnosis
Acute pancreatitis: an acute rise in lipase or amylase (at least 3 times the upper limit of normal) with acute epigastric pain, without fixed structural change (acute pancreatitis).
- Diagnosis
Confirmed by imaging showing structural disease plus insufficiency: diagnosed when characteristic anatomic findings (calcifications, ductal dilation or stricture, parenchymal atrophy) are present…
- Management
Counsel complete alcohol and tobacco cessation first, the foundation of care; alcohol cessation improves pain in case series, and smoking cessation at diagnosis is associated with reduced calcification progression.
- Complications
Pancreatic cancer: risk is elevated above baseline and highest in hereditary (PRSS1) pancreatitis; a new or changed pain pattern, weight loss, or jaundice should prompt pancreatic-protocol CT (pancreatic cancer).
- Prognosis
Pain often improves over time: roughly one-third to one-half of patients have a decrease in pain after about 5 years, though a substantial minority have persistent disabling pain requiring intervention.
- Prevention
Alcohol cessation: counsel complete abstinence in any patient with alcohol-associated disease; case-series data show pain improvement with sustained abstinence.
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Related articles
- Acute pancreatitis
Acute pancreatitis is acinar-cell autodigestion and inflammation of the pancreas, most often from gallstones or alcohol, diagnosed by the revised Atlanta criteria and graded mild, moderately severe, or severe by organ failure. Management centers on early goal-directed lactated Ringer's resuscitation, analgesia, early enteral feeding, and timed ERCP for gallstone pancreatitis with cholangitis, reserving antibiotics for confirmed infected necrosis.
- Pancreatic cancer
Pancreatic ductal adenocarcinoma usually presents late, with painless obstructive jaundice from a head-of-pancreas mass, weight loss, and sometimes new-onset diabetes or migratory thrombophlebitis. Pancreas-protocol CT defines resectability, endoscopic ultrasound with fine-needle aspiration confirms tissue diagnosis, and only complete surgical resection with pancreaticoduodenectomy offers a chance of cure, which most patients cannot receive.
- Cystic fibrosis
Cystic fibrosis is an autosomal recessive CFTR chloride-channel disorder causing thick secretions, bronchiectasis, and exocrine pancreatic insufficiency, diagnosed by elevated sweat chloride confirmed with CFTR genotyping and managed with CFTR modulators, airway clearance, and pancreatic enzyme replacement.
- Alcohol use disorder
Alcohol use disorder is a chronic pattern of drinking meeting 2 or more of 11 DSM-5 criteria within a 1-year period, screened with the CAGE or AUDIT-C and confirmed by history. First-line management combines a brief behavioral intervention and cognitive behavioral therapy with naltrexone or acamprosate, reserving disulfiram for highly motivated patients who can maintain abstinence.
- Type 1 diabetes mellitus
Type 1 diabetes mellitus is an insulin-deficient state from autoimmune (type 1A) or idiopathic (type 1B) destruction of pancreatic beta cells, presenting with hyperglycemia that can range from mild to life-threatening diabetic ketoacidosis. Diagnosis combines standard glycemic criteria with autoantibody testing (GAD65, IA-2), and lifelong insulin therapy, generally as a basal-bolus regimen, is required from diagnosis, with self-monitoring or continuous glucose monitoring to guide dosing.
- Type 2 diabetes mellitus
Type 2 diabetes is hyperglycemia from insulin resistance with progressive relative insulin deficiency, diagnosed by a hemoglobin A1c of 6.5% or higher, a fasting glucose of 126 mg/dL or higher, or a 2-hour oral glucose tolerance test value of 200 mg/dL or higher. First-line treatment is lifestyle modification plus metformin, with an SGLT2 inhibitor or GLP-1 receptor agonist added early for patients with atherosclerotic disease, kidney disease, or heart failure.