Since the 19th century,appropriate lymphadenectomy has been considered a cornerstone of oncologic surgery and one of the most important prognostic factors.This approach can be applied to any surgery for gastrointestin...Since the 19th century,appropriate lymphadenectomy has been considered a cornerstone of oncologic surgery and one of the most important prognostic factors.This approach can be applied to any surgery for gastrointestinal cancer.During surgery for colon and rectal cancer,an adequate portion of the mesentery is removed together with the segment of bowel affected by the disease.The adequate number of lymph nodes to be removed is standardized and reported by several guidelines.It is mandatory to determine the appropriate extent of lymphadenectomy and to balance its oncological benefits with the increased morbidity associated with its execution in cancer patients.Our review focuses on the concept of“complete mesenteric excision(CME)with central vascular ligation(CVL),”a radical lymphadenectomy for colorectal cancer that has gained increasing interest in recent years.The aim of this study was to evaluate the evolution of this approach over the years,its potential oncologic benefits and potential risks,and the improvements offered by laparoscopic techniques.Theoretical advantages of CME are improved local-relapse rates due to complete removal of the intact mesocolic fascia and improved distance recurrence rates due to ligation of vessels at their origin(CVL)which guarantees removal of a larger number of lymph nodes.The development and worldwide diffusion of laparoscopic techniques minimized postoperative trauma in oncologic surgery,providing the same oncologic results as open surgery.This has been widely applied to colorectal cancer surgery;however,CME entails a technical complexity that can limit its wide minimally-invasive application. This review analyzesresults of these procedures in terms of oncological outcomes, technical feasibilityand complexity, especially within the context of minimally invasive surgery.展开更多
Long chain phosphate esters bearing at least one or two aryl groups have been synthesized and used for the preparation of stable multi-walled carbon nanotube (MWCNT) hybrids. The non-covalent interaction ester/MWCNT h...Long chain phosphate esters bearing at least one or two aryl groups have been synthesized and used for the preparation of stable multi-walled carbon nanotube (MWCNT) hybrids. The non-covalent interaction ester/MWCNT has been investigated by several techniques (SEM, UV-vis, 31P-NMR, RAMAN). The used phosphate ester derivatives demonstrated the ability to produce an excellent dispersion of MWCNT in CHCl3. The obtained dispersions showed a great stability from one to at least three weeks in the range of concentration considered. Thermal analysis showed an increase in the decomposition temperature for the hybrids with respect to pristine MWCNT.展开更多
Multifocal fibrosclerosis is a very rare fibroproliferative syndrome involving multiple organ systems. In our report we present the case of multifocal sclerosing thyroiditis characterized by multiple fibroelastic foci...Multifocal fibrosclerosis is a very rare fibroproliferative syndrome involving multiple organ systems. In our report we present the case of multifocal sclerosing thyroiditis characterized by multiple fibroelastic foci similar to breast “radial scar”, which can be misdiagnosed as multifocal papillary carcinoma. The diagnosis of multifocal sclerosing thyroiditis, in according with Armed Forces Institute of Pathology (AFIP) textbook on thyroid tumors, was made only after histological and himmunohistochemical examination. We consider the multifocal sclerosing thyroiditis as the first stage of multifocal IgG4-related sclerosing disease for the presence of IgG4 within fibrosclerotic tissue of thyroid. Total body CT-scan and plamatic IgG4 levels must be investigated in order to exclude or confirm the presence of systemic disease.展开更多
文摘Since the 19th century,appropriate lymphadenectomy has been considered a cornerstone of oncologic surgery and one of the most important prognostic factors.This approach can be applied to any surgery for gastrointestinal cancer.During surgery for colon and rectal cancer,an adequate portion of the mesentery is removed together with the segment of bowel affected by the disease.The adequate number of lymph nodes to be removed is standardized and reported by several guidelines.It is mandatory to determine the appropriate extent of lymphadenectomy and to balance its oncological benefits with the increased morbidity associated with its execution in cancer patients.Our review focuses on the concept of“complete mesenteric excision(CME)with central vascular ligation(CVL),”a radical lymphadenectomy for colorectal cancer that has gained increasing interest in recent years.The aim of this study was to evaluate the evolution of this approach over the years,its potential oncologic benefits and potential risks,and the improvements offered by laparoscopic techniques.Theoretical advantages of CME are improved local-relapse rates due to complete removal of the intact mesocolic fascia and improved distance recurrence rates due to ligation of vessels at their origin(CVL)which guarantees removal of a larger number of lymph nodes.The development and worldwide diffusion of laparoscopic techniques minimized postoperative trauma in oncologic surgery,providing the same oncologic results as open surgery.This has been widely applied to colorectal cancer surgery;however,CME entails a technical complexity that can limit its wide minimally-invasive application. This review analyzesresults of these procedures in terms of oncological outcomes, technical feasibilityand complexity, especially within the context of minimally invasive surgery.
文摘Long chain phosphate esters bearing at least one or two aryl groups have been synthesized and used for the preparation of stable multi-walled carbon nanotube (MWCNT) hybrids. The non-covalent interaction ester/MWCNT has been investigated by several techniques (SEM, UV-vis, 31P-NMR, RAMAN). The used phosphate ester derivatives demonstrated the ability to produce an excellent dispersion of MWCNT in CHCl3. The obtained dispersions showed a great stability from one to at least three weeks in the range of concentration considered. Thermal analysis showed an increase in the decomposition temperature for the hybrids with respect to pristine MWCNT.
文摘Multifocal fibrosclerosis is a very rare fibroproliferative syndrome involving multiple organ systems. In our report we present the case of multifocal sclerosing thyroiditis characterized by multiple fibroelastic foci similar to breast “radial scar”, which can be misdiagnosed as multifocal papillary carcinoma. The diagnosis of multifocal sclerosing thyroiditis, in according with Armed Forces Institute of Pathology (AFIP) textbook on thyroid tumors, was made only after histological and himmunohistochemical examination. We consider the multifocal sclerosing thyroiditis as the first stage of multifocal IgG4-related sclerosing disease for the presence of IgG4 within fibrosclerotic tissue of thyroid. Total body CT-scan and plamatic IgG4 levels must be investigated in order to exclude or confirm the presence of systemic disease.
