Sphincter of Oddi dysfunction and pancreatitis

Table 1 Milwaukee classification of sphincter of Oddi dysfunction

1 Biliary type:

Typical biliary type pain

Liver enzymes (AST, ALT or ALP) > 2 times normal limit documented on at least 2 occasions during episodes of pain

Dilated CBD > 12 mm in diameter

Prolonged biliary drainage time (> 45 min)

Type II:

Biliary type pain and

One or two of the above criteria

Type III:

Biliary type pain only

2 Pancreatic type SOD

TypeI:

Pancreatic type pain

Amylase and/or lipase > 2 times upper normal limit on at least 2 occasions during episodes of pain

Dilated pancreatic duct (head > 6 mm, body > 5 mm)

Prolonged pancreatic drainage time (> 9 min)

Type II:

Pancreatic type pain, and

One or two of the above criteria

Type III:

Pancreatic type pain only