Select morphological findings to classify the radiological severity of chronic pancreatitis.
Guidelines & Evidence
Clinical Details
Section 1
When to Use
When to Use
Diagnosis and grading of chronic pancreatitis severity based on ductal morphology
To standardize reporting of findings on ERCP, MRCP, or EUS
Evaluating patients with chronic abdominal pain and suspected pancreatic origin
Triage for surgical or endoscopic intervention in symptomatic ductal disease
Clinical Context
The Cambridge Classification (1984) remains the primary morphological grading system. It focuses on changes to the main pancreatic duct and secondary branches, providing a roadmap of structural damage.
Limitations
Does not assess exocrine function (fecal elastase) or endocrine function (diabetes)
Early "Equivocal" changes may be seen in aging patients or those without clinical pancreatitis
Cannot reliably differentiate between chronic pancreatitis and early pancreatic adenocarcinoma in "Severe" cases without cytology
Section 2
Formula & Logic
Diagnostic Grades
01
Normal: Normal main duct and side branches.
02
Equivocal: Normal main duct, < 3 abnormal side branches.
03
Mild: Normal main duct, ≥ 3 abnormal side branches.
04
Moderate: Abnormal main duct and > 3 abnormal side branches.
05
Severe: Abnormal main duct plus one or more large cysts (> 10mm), intraductal stones, obstructions, or strictures.
Ductal Abnormalities Defined
Irregularities (tortuosity) of the main duct
Focal or diffuse dilation (> 3mm in head, > 2mm in body, > 1mm in tail)
Intraluminal filling defects (stones/debris)
Side branch dilation or "clubbing"
Section 3
Pearls/Pitfalls
ERCP vs. MRCP vs. EUS
While originally derived from ERCP (the previous "gold standard" for imaging), the Cambridge criteria are now most commonly applied to MRCP and EUS findings. EUS is particularly sensitive for "Mild" and "Equivocal" changes, where Rosemont criteria may also be applied.
Clinical Pearls
A "Severe" grade often mandates a discussion regarding pancreatic duct decompression or stent placement if pain is intractable
Stones in the main duct are the hallmark of chronic calcific pancreatitis and contribute to upstream hypertension and pain
Always correlate morphological severity with exocrine function; significant structural damage may exist before malabsorption occurs
Section 4
Next Steps
Management Pathways
01
Mild/Moderate: Medical management (pain control, enzymes, smoking cessation).
02
Severe: Consider ERCP for stone removal/stenting or surgical referral (e.g., Frey or Puestow procedure).
Complementary Scoring
Rosemont Criteria (EUS)
Manheim Classification
Fecal Elastase Interpretation
Section 5
Evidence Appraisal
Foundational Classification
Classification of pancreatitis.
Sarner M et al. • Gut. 1984;25(7):756-9. The foundational consensus paper.
In 1983, an international group of gastroenterologists and radiologists met in Cambridge, UK, to finalize a terminology for chronic pancreatitis. Before this, terms like "chronic relapsing pancreatitis" were used vaguely. The Cambridge criteria forced a structural, morphology-based definition that persists as the standard world-wide.
