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您的检索式：作者名="Neil D Merrett"
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| 1 | Ampullary cancer of intestinal origin and duodenal cancer-A logical clinical and therapeutic subgroup in periampullary cancer显示文摘Periampullary cancers include pancreatic, ampullary, biliary and duodenal cancers. At presentation, the majority of periampullary tumours have grown to involve the pancreas, bile duct, ampulla and duodenum. This can result in difficulty in defining the primary site of origin in all but the smallest tumors due to anatomical proximity and architectural distortion. This has led to variation in the reported proportions of resected periampullary cancers. Pancreatic cancer is the most common cancer resected with a pancreaticoduodenectomy followed by ampullary(16%-50%), bile duct(5%-39%), and duodenal cancer(3%-17%). Patients with resected duodenal and ampullary cancers have a better reported median survival(29-47 mo and 22-54 mo) compared to pancreatic cancer(13-19 mo). The poorer survival with pancreatic cancer relates to differences in tumour characteristics such as a higher incidence of nodal, neural and vascular invasion. While small ampullary cancers can present early with biliary obstruction, pancreatic cancers need to reach a certain size before biliary obstruction ensues. This larger size at presentation contributes to a higher incidence of resection margin involvement in pancreatic cancer. Ampullary cancers can be subdivided into intestinal or pancreatobiliary subtype cancers with histomolecular staining. This avoids relying on histomorphology alone, as even some poorly differentiated cancers preserve the histomolecular profile of their mucosa of origin. Histomolecular profiling is superior to anatomic location in prognosticating survival. Ampullary cancers of intestinal subtype and duodenal cancers are similar in their intestinal origin and form a logical clinical and therapeutic subgroup of periampullary cancers. They respond to 5-FU based chemotherapeutic regimens such as capecitabine-oxaliplatin. Unlike pancreatic cancers, KRAS mutation occurs in only approximately a third of ampullary and duodenal cancers. Future clinical trials should group ampullary cancers of intestinal origin and duodenal cancers together given their similarities and their response to fluoropyrimidine therapy in combination with oxaliplatin. The addition of anti-epidermal growth factor receptor therapy in this group warrants study. | Manju D Chandrasegaram Anthony J Gill Jas Samra Tim Price John Chen Jonathan Fawcett Neil D Merrett | 2017 | World Journal of Gastrointestinal Oncology2017，9，10： | 4 |
| 2 | Multimodality treatment of potentially curative gastric cancer: Geographical variations and future prospects显示文摘After much controversy, multimodality therapy is now accepted worldwide as the gold standard for treatment of resectable bulky localized gastric cancer. There is significant regional variation in the style of multimodality treatment with adjuvant chemoradiation the North American standard, neoadjuvant chemotherapy preferred in Europe and Australasia, whilst adjuvant chemotherapy is preferred in Asia. With further standardization of surgery and D1+/D2 resections increasingly accepted world wide, and in particular in the West, as the surgical standard of care for potentially curable disease, it is timely to reassess the multimodality regimes being used. The challenge in the use of multimodality therapy is how current outcomes can be standardized and improved further. Recent studies indicate that mere intensification of the regime in time, dosage or addition of further agents does not improve localized gastric cancer outcomes. More novel strategies including early commencement of adjuvant therapies, intra-peritoneal chemotherapy or assessing neoadjuvant response with positron emission tomography scanning may give improvements in outcomes. The introduction of targeted therapies means that the adjuvant use of biological agents needs to be explored. By proper assessment of the patient's co-morbidities, full tumour staging, and a better understanding of the tumour's molecular pathology, multimodality therapy for gastric adenocarcinoma may be individualized to optimize the likelihood of cure. | Neil D Merrett | 2014 | World Journal of Gastroenterology2014，20，36： | 2 |
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