Chronic pancreatitis: Pain and computed tomography/magnetic resonance imaging findings

Table 1 Patterns and classification of pain[10,16,17]

Pattern	Implication
A	Usually, pain-free with episodes of mild to moderate pain
B	Constant mild to moderate pain
C	Usually, pain-free with episodes of severe pain
D	Constant mild to moderate pain plus episodes of severe pain
E	Constant severe pain
Frequency of pain
Intermittent	Pain pattern A or C
Constant	Pain pattern B, D or E
Severity of pain
Mild-moderate	Pain pattern A or B
Severe	Pain pattern C, D or E