Korean J Med.
2014 Apr;86(4):466-471.
Localized Mass-Forming Autoimmune Pancreatitis Associated with an Intraductal Papillary Mucinous Neoplasm Mimicking Pancreatic Cancer
- Affiliations
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- 1Department of Internal Medicine, Samsung Medical Center, Sunkyunkwan University School of Medicine, Seoul, Korea. kwanghyuck.lee@samsung.com
- 2Department of Pathology, Samsung Medical Center, Sunkyunkwan University School of Medicine, Seoul, Korea.
Abstract
- Autoimmune pancreatitis (AIP) has been increasingly recognized in recent years, and most cases are diagnosed without surgery. However, focal-type mass-forming AIP is difficult to differentiate from pancreatic cancer without surgical resection. A 61-year-old male patient with a clinical impression of pancreatic cancer underwent surgery. A postoperative pathologic examination showed locally dense lymphoplasma cell infiltration and numerous lymphoid follicles with fibrosis and a low-grade intraductal papillary mucinous neoplasm (IPMN). Here, we report the first case of localized mass-forming AIP combined with a low-grade IPMN, which mimicked pancreatic cancer, in Korea.
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