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Koneri, Kenji,Hirono, Yasuo,Fujimoto, Daisuke,Sawai, Katsuji,Morikawa, Mitsuhiro,Murakami, Makoto,Goi, Takanori,Iida, Atsushi,Katayama, Kanji,Yamaguchi, Akio The Korean Gastric Cancer Association 2013 Journal of gastric cancer Vol.13 No.1
Alpha-fetoprotein-producing gastric cancer is associated with poor prognosis because of frequent liver and lymph node metastasis. We present a case with synchronous liver metastasis who survived for 5 years. A 69-year-old man with upper abdominal pain was referred to our hospital. Gastrointestinal endoscopy revealed a Borrmann II-like tumor in the lower part of the stomach. Computed tomography revealed a tumor in the left lobe of the liver. Serum alpha-fetoprotein levels were markedly increased. We performed distal gastrectomy after administering oral tegafur/gimeracil/oteracil potassium and administered hepatic intra-arterial cisplatin injection. Liver metastasis showed partial response on computed tomography. Despite left hepatic lobectomy, further metastases to the liver and mediastinal lymph nodes became difficult to control. After sorafenib tosylate administration, stabilization of the disease was observed for 4 months. We conclude that hepatic intra-arterial chemotherapy and oral administration of sorafenib tosylate may potentially improve the prognosis in such cases.
Lei Gao,Hirono, Y.,Ming-Yu Li,Jiang Wu,Sangmin Song,Sang-Mo Koo,Eun-Soo Kim,Wang, Z. M.,Jihoon Lee,Salamo, G. J. IEEE 2012 IEEE TRANSACTIONS ON NANOTECHNOLOGY Vol.11 No.5
<P>A sharp contrast on the density and size of Ga metal droplets is observed on various photolithographically patterned GaAs (100). As clearly evidenced by high-resolution scanning electron microscope, Ga metal droplet density and size surprisingly differ on etched and unetched surfaces under an identical growth condition. The apparent contrast on the density and size of droplets is clearly observed at the interface between etched and unetched areas. Ga droplets exhibit much higher density and the size is much smaller on etched surface; meanwhile, the density is an order of magnitude lower and the size is much larger on unetched surface. Along different directions, [011] and [01-1], due to anisotropic surface diffusion, the density is about twice higher along [011] for the same strip pattern.</P>
Formation of Ga droplets on patterned GaAs (100) by molecular beam epitaxy
Li, Ming-Yu,Hirono, Yusuke,Koukourinkova, Sabina D,Sui, Mao,Song, Sangmin,Kim, Eun-Soo,Lee, Jihoon,Salamo, Gregory J Springer 2012 NANOSCALE RESEARCH LETTERS Vol.7 No.1
<P>In this paper, the formation of Ga droplets on photo-lithographically patterned GaAs (100) and the control of the size and density of Ga droplets by droplet epitaxy using molecular beam epitaxy are demonstrated. In extension of our previous result from the journal <I>Physical Status Solidi A</I>, volume 209 in 2012, the sharp contrast of the size and density of Ga droplets is clearly observed by high-resolution scanning electron microscope, atomic force microscope, and energy dispersive X-ray spectrometry. Also, additional monolayer (ML) coverage is added to strength the result. The density of droplets is an order of magnitude higher on the trench area (etched area), while the size of droplets is much larger on the strip top area (un-etched area). A systematic variation of ML coverage results in an establishment of the control of size and density of Ga droplets. The cross-sectional line profile analysis and root mean square roughness analysis show that the trench area (etched area) is approximately six times rougher. The atomic surface roughness is suggested to be the main cause of the sharp contrast of the size and density of Ga droplets and is discussed in terms of surface diffusion.</P>