Patients with autoimmune pancreatitis commonly have lesions in the bile duct itself and show stenosis of the bile duct system.
No detailed study has evaluated the ultrasonographic findings of bile duct lesions in autoimmune pancreatitis.
Dr Rikako Koyama and colleagues monitored the clinical course and imaging findings, mainly ultrasonographic, of bile duct lesions in autoimmune pancreatitis.
|Bile duct thickening on ultrasound was found in 38% with autoimmune pancreatitis|
The team retrospectively analyzed the incidence of bile duct lesions, imaging findings, and clinical course in 37 patients with autoimmune pancreatitis.
The researchers recognized characteristic bile duct and gallbladder wall thickening on ultrasound in 38% of autoimmune pancreatitis patients.
The team divided the patients into 2 groups according to the ultrasonographic findings of bile duct wall thickening.
Those in Group 1 had 3-layer type, and those in Group 2 had parenchymal-echo type.
All 14 cases were treated with prednisolone, with immediate resolution of the bile duct lesions.
Dr Koyama‘s team concluded, “Ultrasonography is a useful tool in detecting biliary tract lesions in autoimmune pancreatitis.”