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| 1 | Sentinel lymph node biopsy for gastric cancer:Where do we stand?显示文摘Development of sentinel node navigation surgery (SNNS) and advances in minimally invasive surgical techniques have greatly shaped the modern day approach to gastric cancer surgery.An extensive body of knowledge now exists on this type of clinical application but is principally composed of single institute studies.Certain dye tracers,such as isosulfan blue or patent blue violet,have been widely utilized with a notable amount of success;however,indocyanine green is gaining popularity.The double tracer method,a synchronized use of dye and radio-isotope tracers,appears to be superior to any of the dyes alone.In the meantime,the concepts of infrared ray electronic endoscopy,florescence imaging,nanoparticles and near-infrared technology are emerging as particularly promising alternative techniques.Hematoxylin and eosin staining remains the main method for the detection of sentinel lymph node (SLN) metastases.Several specialized centers have begun to employ immunohistochemical staining for this type of clinical analysis but the equipment costs involving the associated ultra-rapid processing systems is limiting its widespread application.Laparoscopic function-preserving resection of primary tumor from the stomach in conjunction with lymphatic basin dissection navigated by SLN identification represents the current paramount of SNNS for early gastric cancer.Patients with cT3 stage or higher still require standard D 2 dissection. | Mehmet Fatih Can Gokhan Yagci Sadettin Cetiner | 2011 | World Journal of Gastrointestinal Surgery2011，3，9： | 4 |
| 2 | Colorectal cancer and lymph nodes:The obsession with the number 12显示文摘Lymphadenectomy of colorectal cancer is a decisive factor for the prognostic and therapeutic staging of the patient.For over 15 years,we have asked ourselves if the minimum number of 12 examined lymph nodes(LNs)was sufficient for the prevention of understaging.The debate is certainly still open if we consider that a limit of 12 LNs is still not the gold standard mainly because the research methodology of the first studies has been criticized.Moreover many authors report that to date both in the United States and Europe the number'12'target is uncommon,not adequate,or accessible only in highly specialised centres.It should however be noted that both the pressing nature of the debate and the dissemination of guidelines have been responsible for a trend that has allowed for a general increase in the number of LNs examined.There are different variables that can affect the retrieval of LNs.Some,like the surgeon,the surgery,and the pathology exam,are without question modifiable;however,other both patient and disease-related variables are non-modifiable and pose the question of whether the minimum number of examined LNs must be individually assigned.The lymph nodal ratio,the sentinel LNs and the study of the biological aspects of the tumor could find valid application in this field in the near future. | Giovanni Li Destri Isidoro Di Carlo Roberto Scilletta Beniamino Scilletta Stefano Puleo | 2014 | World Journal of Gastroenterology2014，20，8： | 4 |
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