A case report of autoimmune pancreatitis associated with a pancreatic pseudocyst

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Abstract

Rationale:

Autoimmune pancreatitis (AIP) is a special type of chronic pancreatitis, which is rarely associated with pseudocyst.

Patient concerns:

A 48-year-old man complained of a recurrent upper abdominal pain in our hospital.

Diagnoses:

A cystic mass of size 4 × 3 cm in his pancreatic tail was found by computed tomography. The concentrations of serum carbohydrate antigen19–9 (81 U/mL) and serum immunoglobulin G4 (181 mg/dL) were elevated.

Interventions:

The patient received partial pancreatectomy with splenectomy and partial esophagectomy.

Outcomes:

Further histopathological examination revealed a pseudocyst, significant lymphoplasmatic infiltration, and fibrosis in the pancreas and esophagus. We report a rare case of AIP complicated with a pancreatic pseudocyst and invasion of lower esophagus.

Lessons:

Our study demonstrated that surgical therapy should be considered for the refractory AIP complicated with a pancreatic pseudocyst and invasion of lower esophagus.

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