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  Indian J Med Microbiol
 

Figure 1: Example of EUS-through-the-needle biopsy. Pancreatic cystic lesion with a thickened cyst wall (a). Insertion of a 19-gauge FNA needle inside the pancreatic cystic lesion (b). Opening of the valves of micro forceps inside the pancreatic cystic lesion (c). Sampling of the cyst wall with micro forceps determining the so-called “tent sign” (d). Microhistological specimen of a branch duct intraductal papillary mucinous neoplasm obtained with EUS-through-the-needle biopsy. It can be seen the presence of both epithelial lining and stroma of cystic wall. In this specimen, it was possible to perform immunohistochemistry for cytokeratin-7, a protein used to highlight (brown-colored cells) epithelial line (e)

Figure 1: Example of EUS-through-the-needle biopsy. Pancreatic cystic lesion with a thickened cyst wall (a). Insertion of a 19-gauge FNA needle inside the pancreatic cystic lesion (b). Opening of the valves of micro forceps inside the pancreatic cystic lesion (c). Sampling of the cyst wall with micro forceps determining the so-called “tent sign” (d). Microhistological specimen of a branch duct intraductal papillary mucinous neoplasm obtained with EUS-through-the-needle biopsy. It can be seen the presence of both epithelial lining and stroma of cystic wall. In this specimen, it was possible to perform immunohistochemistry for cytokeratin-7, a protein used to highlight (brown-colored cells) epithelial line (e)