Article
Autoimmune pancreatitis: pathological findings.
Department of Pathology, University of Kiel, Kiel, Germany.
JOP: Journal of the pancreas
02/2005;
6(1 Suppl):97-101.
pp.97-101
Source: PubMed
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Citations (0)
- Cited In (2)
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Article: Lymphoplasmacytic sclerosing pancreatitis and retroperitoneal fibrosis.
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ABSTRACT: Although cases of lymphoplasmacytic sclerosing pancreatitis (LSP) associated with idiopathic retroperitoneal fibrosis have been reported, the association is rare. We describe a 74-year-old man who presented with obstructive jaundice and weight loss. Nineteen months earlier, he had been diagnosed with idiopathic retroperitoneal fibrosis and treated with bilateral ureteric stents. Initial investigations were suggestive of a diagnosis of LSP, however, a malignant cause could not be ruled out. He underwent an exploratory laparotomy and frozen sections confirmed the diagnosis of LSP. An internal biliary bypass was performed using a Roux loop of jejunum, and the patient made an uneventful recovery. This case illustrates the difficulty in distinguishing LSP from pancreatic carcinoma preoperatively.HPB Surgery 02/2008; 2008:719513. -
Article: Current concepts in the diagnosis and treatment of type 1 and type 2 autoimmune pancreatitis.
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ABSTRACT: Since the 1990s, autoimmune pancreatitis (AIP) has been increasingly recognized as a special type of chronic pancreatitis. Clinically, AIP patients commonly present with jaundice, weight loss and abdominal pain. Radiologically, there is diffuse or focal enlargement of the pancreas, often with narrowing of the pancreas and bile duct. Histologically, AIP is characterized by periductal infiltrates of lymphocytes and plasma cells, cellular fibrosis and obliterative phlebitis. Recently, two types of AIP were distinguished and called type 1 and type 2 AIP. They share the symptomatology and some histopathological features such as periductal lymphoplasmacytic infiltrate and storiform fibrosis, but differ in a particular duct change, called granulocytic epithelial lesion, which characterizes type 2 AIP. In addition, type 2 AIP usually has none or very few (<10 cells/ high power field (hpf)) IgG4-positive plasma cells. Clinically, type 1 AIP patients are roughly 10 years older than type 2 AIP patients, show a slight preponderance of men and reveal extrapancreatic manifestations of IgG4 associated systemic disease in approximately 50% of the cases. Type 2 AIP patients frequently show an association with inflammatory bowel disease and usually lack serological elevation of IgG4. The main differential diagnosis of AIP is pancreatic ductal adenocarcinoma. In many instances the diagnosis of AIP can be made by imaging together with serological markers. In difficult cases, particularly in type 2 AIP, the diagnosis has to be established by core needle biopsy. Both type 1 and type 2 AIP patients respond to steroid treatment, but a significant proportion of type 1 AIP patients suffer from recurrence of the disease. We describe the clinical and histological features of the two types of AIP as well as the treatment. In connection with pathogenesis and diagnosis, recent findings on immune complex deposition, autoantibodies in AIP and relevant patents are discussed.Recent Patents on Inflammation & Allergy Drug Discovery 04/2011; 5(2):136-49.
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Keywords
autoimmune pancreatitis
chronic pancreatitis
consequent destruction
distal bile duct
duct-destructive chronic pancreatitis
granulocytic epithelial lesions
immunological features
inflammatory myofibroblastic tumor
lymphocytes
lymphoplasmacytic sclerosing pancreatitis
plasma cells
recent years
sclerosing pancreatitis