The zebrafish model organism has been used extensively for studies of genetic pathways in development, indicating its potential applicability to cancer. Here we show that targeted expression of MYCN in cells of the pancreatic islet induces neuroendocrine carcinoma. Four transgenic fish developed abdominal tumors between 4 and 6 months of age, and histologic analysis revealed lobulated arrangeme...

autoimmune pancreatitis is a fibro-inflammatory form of chronic pancreatitis. it is diagnosed by the combination of imaging studies such as a ct scan and pancreatography, laboratory analyses that include igg4 and/or autoantibodies, histopathological evaluations and positive response to corticosteroid therapy. we report the case of a 41-year-old female with a history of jaundice and increasing a...

Myoepithelial hamartoma is a very rare submucosal tumor of the stomach. Magnus-Alsleben first described 5 cases of this tumor in 1903. More recently (1993) Vandelli et al. published a review of the literature comprising only 33 cases. Histologically, the tumor is characterized by hypertrophic smooth muscle bands surrounding diverse epithelial elements that can be arranged in different ways: as ...

Mucoepidermoid carcinoma of the pancreas is rare. Here, a 63-year-old woman with left upper abdominal pain and abdominal distension is presented. Her mucoepidermoid carcinoma was located at the left upper abdomen, arising from the pancreatic body and tail without invasion of pancreatic capsule. On pathologic examination, the tumor consisted of three types of cells, the majority being poorly dif...

In order to define the undifferentiated transcriptional factors present in neurogenesis of pancreatic β-islet cells, we studied the effect of Pdx1 in embryonic stem cell derived endocrine lineage. There are undifferentiated transcriptional progenitors Pdx1+/Ptf1a+/Cpa1+ tracking the growth of acini, ducts, α and β-islet cells. The upregulated transcriptional factors Pdx1 and ngn3 specify conseq...

recognized as important extracellular signaling molecules in many biological systems (1). In epithelia, ATP signaling is thought to regulate fluid transport, and exocrine glands are one of the first epithelia where the effect of ATP on ion channels and Ca signaling was observed (2, 3). Nevertheless, many steps in ATP signaling, also known as purinergic signaling, remain to be clarified. This in...

Objective: This present study was aimed to assess the effectiveness and reliability of CT-guided nanoknife ablation in retroperitoneal tumor treatment. Methods: 2 retroperitoneal tumor patients were selected, including one pancreatic cancer patient and one colorectal cancer retroperitoneal metastatic tumor patient. The surgery was performed under general anesthesia with large aperture multi-sli...

Activating mutations in the Kras gene are commonly found in some but not all epithelial cancers. In order to understand the susceptibility of different epithelial tissues to Kras-induced tumorigenesis, we introduced one of the most common Kras mutations, Kras(G12D), broadly in epithelial tissues. We used a mouse model in which the G12D mutation is placed in the endogenous Kras locus controlled ...

The human exocrine pancreas consists of 2 main cell types: acinar and ductal cells. These exocrine cells interact closely to contribute to the secretion of pancreatic juice. The most important ion in terms of the pancreatic ductal secretion is HCO3. In fact, duct cells produce an alkaline fluid that may contain up to 140 mM NaHCO3, which is essential for normal digestion. This article provides ...