We present a novel configuration of hybrid-integrated silicon photonic interconnects employing a bridge structure, and demonstrate 25 Gbps error-free operation between transmitter and receiver with ...power efficiency of 9.6 mW/Gbps including a serializer chip.
We report a case of pancreatic injury that underwent an operation on 3 months after trauma. A 17-year-old man bruised his abdomen in an accident on April 10, 2001. He referred to a doctor and ...diagnosed with traumatic pancreatic injury. Despite conservative therapy, his serum amylase remained high. He was referred to another hospital and diagnosed in abdominal computed tomography (CT) and other studies with obstruction of the main pancreatic duct. He was referred to us for surgery, conducted on July 11. The pancreatic body and tail were very hard due to obstructive inflammation, necessiting pancreatojejunostomy. His postoperative course was uneventful and he was discharged on postoperative day 19.
A 52-year-old man admitted for palpitation and exertional dyspnea was found by our internal medicine department to have anemia and sigmoid colon carcinoma. The patient had situs inversus (Kartagener ...syndrome), and preoperative diagnosis of complicated anomalies were right-sided heart, two-lobe lung, multiple spleens, IVC defect and intestinal malrotation. Surgical findings were left-sided liver, right-sided stomach, total situs inversus, and nonrotational intestinal malrotation in which the cecum was on the median. Since sigmoid colon carcinoma inveded the cecum we conducted sigmoidectomy with ileocecal resection. The man was discharged on postoperative day 18. Situs inversus is a rare congenital disease and often has several complicated anomalies. Although this case involved sigmoid colon carcinoma with some complicated anomalies, no severe problems occurred during surgery.
A 54-year-old woman complaing of right upper abdominal pain was referred to the hospital with a diagnosis of a giant hepatocellular carcinoma (HCC) 20cm in size on admission, the HCC occupied the ...entire right and medial lobes of the liver, and contacted with the left hepatic vein. The tumor emboli advanced to the main to left branchs of portal vein (Vp4). A right trisegmentectomy, a caudate lobectomy, a removal of the tumor emboli in the portal vein, a bile duct resection and a hepaticojejunostomy were performed. During the removal of the tumor emboli, a baloon catheter inserted from the umbilical vein was used as a method of hemostasis. The postoperative course was uneventful and she was discharged from the hospital on 24th POD. However, recurrence occurred in the remnant liver two months later. Inspite of additional therapies such as intermittent, intraarterial chemotherapy with reservor and radiation, she died of recurrence ten months after the operation. Pathologically, the mass was moderately differentiated HCC with vp4 and the tumor emboli invaded the wall of the bifurcation of the portal vein. We think that this HCC revealed a rare mode of progression as HCC.
We report a case of gastrointestinal stromal tumor (GIST) of the pylorus ring which is a rare site. A 71-year-old woman was admitted to the hospital because of anemia detected by a mass screening. We ...had great difficulty in decision making of tumor location. On CT and magrotic resonance imaging, a movable tumor measuring 6cm seemed to be located in the stomach. But, on endoscopy and gastroduodenography, the tumor was considered to be a submucosal lesion in the duodenum. We perform a laparotomy under a diagnosis of submucosal tumor near the pylorus. A gouse egg sized mass was found and resection of the antrum and duodenal bulb was performed. The resected speciemen showed a solid mass measuring 7.5×5.5cm on the pylorus ring. Pathological examination showed that the tumor was GIST positive for CD34 and c-kit and negative for actin-SM and S-100. GIST on the pylorus ring has not yet been reported so far. This rare case is presented with some bibliographical discussion.
We report a small cholangiocellular carcinoma found during a hepatectomy for hepatocellular carcinoma (HCC). A 64-year-old man was referred to the hospital with a diagnosis of multiple HCCs in S4, S5 ...and S7, while he was followed-up for liver cirrhosis. During operation, we found a white hard mass near the HCC in S5. So partial resections of S4 and S7 and a S5 segmentectomy including the new 4th lesion were performed. Pathological study demonstrated three HCCs, and one moderately differentiated adenocarcinoma that was tumor-forming small cholangiocellular carcinoma (CCC). This CCC showed perineural and lymphatic invasion. We report this rare case of double cancer with HCC and CCC, in which the CCC exhibited features of advanced cancer despite it was as small as 1cm in diameter.
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