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Laparoscopic Surgery for Advanced Gastric Cancer: Current Status and Future Perspectives
Uyama, Ichiro,Suda, Koichi,Satoh, Seiji The Korean Gastric Cancer Association 2013 Journal of gastric cancer Vol.13 No.1
Laparoscopic gastrectomy has been widely accepted especially in patients with early-stage gastric cancer. However, the safety and oncologic validity of laparoscopic gastrectomy for advanced gastric cancer are still being debated. Since the late 90s', we have been engaged in developing a stable and robust methodology of laparoscopic radical gastrectomy for advanced gastric cancer, and have established laparoscopic distinctive technique for suprapancreatic lymph node dissection, namely the outermost layer-oriented medial approach. In this article, We present the development history of this method, and current status and future perspectives of laparoscopic gastrectomy for advanced gastric cancer based on our experience and a review of the literature.
Laparoscopic Surgery for Advanced Gastric Cancer: Current Status and Future Perspectives
Ichiro Uyama,Koichi Suda,Seiji Satoh 대한위암학회 2013 Journal of gastric cancer Vol.13 No.1
Laparoscopic gastrectomy has been widely accepted especially in patients with early-stage gastric cancer. However, the safety and oncologic validity of laparoscopic gastrectomy for advanced gastric cancer are still being debated. Since the late 90s’, we have been engaged in developing a stable and robust methodology of laparoscopic radical gastrectomy for advanced gastric cancer, and have established laparoscopic distinctive technique for suprapancreatic lymph node dissection, namely the outermost layer-oriented medial approach. In this article, We present the development history of this method, and current status and future perspectives of laparoscopic gastrectomy for advanced gastric cancer based on our experience and a review of the literature.
Crystal Structure and Morphology of Poly(16-hexadecalactone) Chain-folded Lamellar Crystals
Kim, Eunju,Uyama, Hiroshi,Doi, Yoshiharu,Ha, Chang-Sik,Iwata, Tadahisa WILEY-VCH Verlag 2005 Macromolecular bioscience Vol.5 No.8
<P>Summary: Solution-grown, chain-folded lamellar crystals of poly(16-hexadecalactone) (PHDL) were crystallized isothermally from 1-hexanol at 70 °C. The morphology of lozenge-shaped crystals was studied by TEM and AFM. The lamellae are ca. 10 nm thick and the chains run orthogonal to the lamellar surface with folding along (110) and (<TEX>$1\bar 10$</TEX>) planes. The crystal structure of PHDL was determined by XRD and election diffraction of single crystals. The chains are in the 2<SUB>1</SUB> helix conformation close to all-trans and the structure consists of an orthorhombic unit cell with a P2<SUB>1</SUB>2<SUB>1</SUB>2<SUB>1</SUB> space group with the lattice constants a = 0.746 ± 0.001 nm, b = 0.504 ± 0.001 nm, and c (chain axis) = 4.116 ± 0.003 nm. There are two chains per unit cell, which exist in an antiparallel arrangement. Molecular packing structure has been studied in detail, taking into account both diffraction data and energy calculations. The setting angles, with respect to a axis, were ±40° for the corner and center chains, respectively. By using the electron and XRD data, the best molecular packing model was refined to R-factors of 0.168 and 0.196, respectively. A brief comparison of chain-packing structure is also made with related polymer structures.</P><P> <img src='wiley_img/16165187-2005-5-8-MABI200500038-gra001.gif' alt='wiley_img/16165187-2005-5-8-MABI200500038-gra001'> Graphic </P>