Lymph node metastasis is the hallmark of colon cancer progression,and is considered one of the most important prognostic factors.Recently,there has been growing evidence that tumor lymphangiogenesis(formation of new l...Lymph node metastasis is the hallmark of colon cancer progression,and is considered one of the most important prognostic factors.Recently,there has been growing evidence that tumor lymphangiogenesis(formation of new lymphatic vessels) plays an important role in this process.Here,we review the latest f indings of the role of lymphangiogenesis in colorectal cancer progression,and discuss its clinical application as a biomarker and target for new therapy.Understanding the molecular pathways that regulate lymphangiogenesis is mandatory to pave the way for the development of new therapies for cancer.In the future,tailored treatments consisting of combinations of chemotherapy,other targeted therapies,and anti-lymphangiogenesis agents will hopefully improve patient outcomes.This progression to the clinic must be guided by new avenues of research,such as the identif ication of biomarkers that predict response to treatment.展开更多
Meckel's diverticulum is a common asymptomatic congenital gastrointestinal anomaly,but rarely it can present with hemorrhage.Over the last few years inverted Meckel's diverticulum has been reported in the lite...Meckel's diverticulum is a common asymptomatic congenital gastrointestinal anomaly,but rarely it can present with hemorrhage.Over the last few years inverted Meckel's diverticulum has been reported in the literature with increasing frequency as an occult source of lower gastrointestinal hemorrhage.Here,we report a case of a 54-year-old male,who was referred for surgical evaluation with persistent anemia and occult blood per rectum after a work up which failed to localize the source over 12 mo,including upper and capsule endoscopy,colonoscopy,enteroclysis,Meckel scan,and tagged nuclear red blood cell scan.An abdominal computed tomography scan showed a possible mid-ileal intussusception and intraluminal mass.During the abdominal exploration,inverted Meckel's diverticulum was diagnosed and resected.We review the literature,discuss the forms in which the disease presents,the diagnostic modalities utilized,pathological findings,and treatment.Although less than 40 cases have been reported in the English literature from 1978 to 2005,19 cases have been reported in the last 6 years alone(2006-2012) due to improved diagnostic modalities.Successful diagnosis and treatment of this disease requires a high index of clinical suspicion,which is becoming increasingly relevant to general gastroenterologists.展开更多
基金Supported by SUMITOMO Life Social Welfare Services Foundation (to Nagahashi M)Virginia Commonwealth University Grant BIRCWH K12HD055881,and Susan G Komen for the Cure Career Catalyst Research Grant KG090510 (to Takabe K)
文摘Lymph node metastasis is the hallmark of colon cancer progression,and is considered one of the most important prognostic factors.Recently,there has been growing evidence that tumor lymphangiogenesis(formation of new lymphatic vessels) plays an important role in this process.Here,we review the latest f indings of the role of lymphangiogenesis in colorectal cancer progression,and discuss its clinical application as a biomarker and target for new therapy.Understanding the molecular pathways that regulate lymphangiogenesis is mandatory to pave the way for the development of new therapies for cancer.In the future,tailored treatments consisting of combinations of chemotherapy,other targeted therapies,and anti-lymphangiogenesis agents will hopefully improve patient outcomes.This progression to the clinic must be guided by new avenues of research,such as the identif ication of biomarkers that predict response to treatment.
基金Supported by United States National Institute of Health grants,K12HD055881 and R01CA160688,to Takabe KJapan Society for the Promotion of Science Postdoctoral Fellowship for Re-search Abroad,to Nagahashi M
文摘Meckel's diverticulum is a common asymptomatic congenital gastrointestinal anomaly,but rarely it can present with hemorrhage.Over the last few years inverted Meckel's diverticulum has been reported in the literature with increasing frequency as an occult source of lower gastrointestinal hemorrhage.Here,we report a case of a 54-year-old male,who was referred for surgical evaluation with persistent anemia and occult blood per rectum after a work up which failed to localize the source over 12 mo,including upper and capsule endoscopy,colonoscopy,enteroclysis,Meckel scan,and tagged nuclear red blood cell scan.An abdominal computed tomography scan showed a possible mid-ileal intussusception and intraluminal mass.During the abdominal exploration,inverted Meckel's diverticulum was diagnosed and resected.We review the literature,discuss the forms in which the disease presents,the diagnostic modalities utilized,pathological findings,and treatment.Although less than 40 cases have been reported in the English literature from 1978 to 2005,19 cases have been reported in the last 6 years alone(2006-2012) due to improved diagnostic modalities.Successful diagnosis and treatment of this disease requires a high index of clinical suspicion,which is becoming increasingly relevant to general gastroenterologists.
