The combination of fibrin glue and bioabsorbable PGA felt was extremely favorable for prevention of bile leakage after hepatic resection.

No abstract

Pancreatectomy in a 45-year-old woman showed, after pathologic analysis, an epidermoid cyst originating from an intrapancreatic accessory spleen. This mass consisted of parenchymal and cystic components. It is important to note the relation between the splenic parenchyma and the parenchymal component of the mass for the differential diagnosis of a cystic mass in the pancreatic tail.

This research deals with the development of a simple and practical method for manufacturing high-aspect-ratio (height/width) micro-parts and three-dimensional micro-parts. The desired product shape is obtained by writing along the contour of the product on the surface of a liquid photopolymer using a focused UV laser beam. The written pattern then becomes solid so as to produce a solidified polymer mold or structure. This paper examines the effect of physical parameters such as wavelength of laser beam, focal length of lens, absorption coefficient and writing speed on the shapes of the solidified polymer. The examination is done theoretically, and the optimum conditions to produce high-aspect-ratio micro-parts and three-dimensional micro-parts are also verified. Using these conditions, various microstructures are produced.

This research work deals with the methods for manufacturing high aspect ratio micro mechanical parts by using UV photopolymer. In the first method, polymer structures are produced using a mask-based method. And the second i s a direct focused UV laser beam writing method. The irradiated portion of the liquid photopolymer i s solidified and i t becomes a polymer structure. At first, the solidified shape of the polymer i s examined in each method and the optimum conditions to produce high aspect ratio structures are verified. Next, the comparison of the both methods are made. At l a s t , examples o f structures that have been produced using the methods described are shown.

The purpose of this research is to produce micro parts reinforced by unidirectional short fibers using laser stereolithography. Ferromagnetic short fibers are added to a liquid photopolymer and a magnetic field is then applied to the liquid photopolymer, aligning the axes of the short fibers along the magnetic field direction. Then, the photopolymer is solidified by UV laser irradiation in a desired shape. Solidified photopolymers containing the unidirectional short fibers are layered until the desired height is obtained. The surfaces of the solidified layers are observed and the possibility of a reinforcing effect between the layers is examined.

: Fusion of the dorsal and ventral pancreatic ducts exhibits various forms and one of them is branching fusion. Branch fusion was divided into 3 types according to ERP findings. Fusion of the upper branches of the ventral pancreatic duct with the dorsal pancreatic ducts was designated as being type 1. Fusion of the lower branch of the dorsal pancreatic duct with the ventral pancreatic duct in roundabout way was designated as being type 2. Fusion of the lower branch of the dorsal pancreatic duct with the ventral pancreatic duct in short way was designated as being type 3. We demonstrated the presence of branch fusion involving the branch of the dorsal pancreatic duct by histopathological examination and immunohistochemical examination using pancreatic polypeptide cells as an indicator in one patient with type 1 branch fusion and one with type 3 branch fusion who underwent a pancreatoduodenectomy. ERP showed chronic pancreatitis in 3 of 4 patients with type 1, 3 of 8 patients with type 2, and 7 of 18 patients with type 3 branch fusion, of whom 1, 2, and 4, respectively had non‐alcoholic pancreatitis. The high incidence of pancreatitis suggested that branch fusion is the cause of pancreatitis. In addition, evaluation of ERP images revealed Santorini's duct originating from the ventral pancreatic duct in 5 patients with type 1 branch fusion, suggesting the presence of the ansa pancreatica proposed by Dawson. This finding may also be closely associated with the development of pancreatitis. (Dig Endosc 1994; 6 : 87–93)

No abstract