AIM:To investigate whether tumor marker staining can improve the sensitivity of endoscopic ultrasound-guided fine needle aspiration(EUS-FNA)to diagnose pancreatic malignancy. METHODS:Patients who underwent EUS-FNA wer...AIM:To investigate whether tumor marker staining can improve the sensitivity of endoscopic ultrasound-guided fine needle aspiration(EUS-FNA)to diagnose pancreatic malignancy. METHODS:Patients who underwent EUS-FNA were retrospectively identified.Each EUS-FNA specimen was evaluated by routine cytology and stained for tumor markers p53,Ki-67,carcinoembryonic antigen(CEA) and CA19-9.Sensitivity,specificity,positive and negative predictive values(PPV and NPV),and positive and negative likelihood ratios(PLR and NLR)were calculated in order to evaluate the performance of each test to detect malignancy. RESULTS:Sixty-one specimens had complete sets of stains,yielding 49 and 12 specimens from pancreatic adenocarcinomas and benign pancreatic lesions due to pancreatitis,respectively.Cytology alone had sensitivity and specificity of 41%and 100%to detect malignancy, respectively.In 46%of the specimens,routine cytology alone was deemed indeterminate.The addition of either p53 or Ki-67 increased the sensitivity to 51%and 53%,respectively,with perfect specificity,PPV and PLR (100%,100%and infinite).Both stains in combination increased the sensitivity to 57%.While additional staining with CEA and CA19-9 further increased the sensitivity to 86%,the specificity,PPV and PLR were significantly reduced(at minimum 42%,84%and 1,respectively).Markers in all combinations performed poorly as a negative test(NPV 26%to 47%,and NLR 0.27 and 0.70).CONCLUSION:Immunohistochemical staining for p53 and Ki-67 can improve the sensitivity of EUS-FNA to diagnose pancreatic adenocarcinoma.展开更多
BACKGROUND Hepatic cirrhosis is associated with greater adverse event rates following surgical procedures and is thought to have a higher risk of complications with interventional procedures in general.However,these s...BACKGROUND Hepatic cirrhosis is associated with greater adverse event rates following surgical procedures and is thought to have a higher risk of complications with interventional procedures in general.However,these same patients often require interventional gastrointestinal procedures such as endoscopic retrograde cholangiopancreatography(ERCP)and endoscopic ultrasound(EUS).While studies examining this scenario exist,the overall body of evidence for adverse event rates associated with ERCP/EUS procedures is more limited.We sought add to the literature by examining the incidence of adverse events after ERCP/EUS procedures in our safety-net hospital population with the hypothesis that severity of cirrhosis correlates with higher adverse event rates.AIM To examine whether increasing severity of cirrhosis is associated with greater incidence of adverse events after interventional ERCP/EUS procedures.METHODS We performed a retrospective study of patients diagnosed with hepatic cirrhosis who underwent ERCP and/or EUS-guided fine needle aspirations/fine needle biopsies from January 1,2016 to March 14,2019 at our safety net hospital.We recorded Child-Pugh and Model for End-stage Liver Disease(MELD-Na)scores at time of procedure,interventions completed,and 30-day post-procedural adverse events.Statistical analyses were done to assess whether Child-Pugh class and MELD-Na score were associated with greater adverse event rates and whether advanced techniques(single-operator cholangioscopy,electrohydraulic lithotripsy/laser lithotripsy,or needle-knife techniques)were associated with higher complication rates.RESULTS 77 procedures performed on 36 patients were included.The study population consisted primarily of middle-aged Hispanic males.30-d procedure-related adverse events included gastrointestinal bleeding(7.8%),infection(6.5%),and bile leak(2%).The effect of Child-Pugh class C vs class A and B significantly predicted adverse events(β=0.55,P<0.01).MELD-Na scores also significantly predicted adverse events(β=0.037,P<0.01).Presence of advanced techniques was not associated with higher adverse events(P>0.05).When MELD-Na scores were added as predictors with the effect of Child-Pugh class C,logistic regression showed MELD-Na scores were a significant predictor of adverse events(P<0.01).The findings held after controlling for age,gender,ethnicity and repeat cases.CONCLUSION Increasing cirrhosis severity predicted adverse events while the presence of advanced techniques did not.MELD-Na score may be more useful in predicting adverse events than Child-Pugh class.展开更多
BACKGROUND Endoscopic ultrasound-guided fine needle biopsy(EUS-FNB)has emerged as a safe,efficacious alternative to fine needle aspiration(FNA)for tissue acquisition.EUS-FNB is reported to have higher diagnostic yield...BACKGROUND Endoscopic ultrasound-guided fine needle biopsy(EUS-FNB)has emerged as a safe,efficacious alternative to fine needle aspiration(FNA)for tissue acquisition.EUS-FNB is reported to have higher diagnostic yield while preserving specimen tissue architecture.However,data on the optimal method of EUS-FNB specimen processing is limited.AIM To evaluate EUS-FNB with specimen processing as histology vs EUS-FNA cytology with regards to diagnostic yield and specimen adequacy.METHODS All EUS-FNA and EUS-FNB performed at our institution from July 1,2016,to January 31,2018,were retrospectively analyzed.We collected data on demographics,EUS findings,pathology,clinical outcomes,and procedural complications in two periods,July 2016 through March 2017,and April 2017 through January 2018,with predominant use of FNB in the second data collection time period.FNA specimens were processed as cytology with cell block technique and reviewed by a cytopathologist;FNB specimens were fixed in formalin,processed for histopathologic analysis and immunohistochemical staining,and reviewed by an anatomic pathologist.Final diagnosis was based on surgical pathology when available,repeat biopsy or imaging,and length of clinical follow up.RESULTS One hundred six EUS-FNA and EUS-FNB procedures were performed.FNA alone was performed in 17 patients;in 56 patients,FNB alone was done;and in 33 patients,both FNA and FNB were performed.For all indications,diagnostic yield was 47.1%(8/17)in FNA alone cases,85.7%(48/56)in FNB alone cases,and 84.8%(28/33)in cases where both FNA and FNB were performed(P=0.0039).Specimens were adequate for pathologic evaluation in 52.9%(9/17)of FNA alone cases,in 89.3%(50/56)of FNB alone cases,and 84.8%(28/33)in cases where FNA with FNB were performed(P=0.0049).Tissue could not be aspirated for cytology in 10.0%(5/50)of cases where FNA was done,while in 3.4%(3/89)of FNB cases,tissue could not be obtained for histology.In patients who underwent FNA with FNB,there was a statistically significant difference in both specimen adequacy(P=0.0455)and diagnostic yield(P=0.0455)between the FNA and FNB specimens(processed correspondingly as cytology or histology).CONCLUSION EUS-FNB has a higher diagnostic yield and specimen adequacy than EUS-FNA.In our experience,specimen processing as histology may have contributed to the overall increased diagnostic yield of EUS-FNB.展开更多
文摘AIM:To investigate whether tumor marker staining can improve the sensitivity of endoscopic ultrasound-guided fine needle aspiration(EUS-FNA)to diagnose pancreatic malignancy. METHODS:Patients who underwent EUS-FNA were retrospectively identified.Each EUS-FNA specimen was evaluated by routine cytology and stained for tumor markers p53,Ki-67,carcinoembryonic antigen(CEA) and CA19-9.Sensitivity,specificity,positive and negative predictive values(PPV and NPV),and positive and negative likelihood ratios(PLR and NLR)were calculated in order to evaluate the performance of each test to detect malignancy. RESULTS:Sixty-one specimens had complete sets of stains,yielding 49 and 12 specimens from pancreatic adenocarcinomas and benign pancreatic lesions due to pancreatitis,respectively.Cytology alone had sensitivity and specificity of 41%and 100%to detect malignancy, respectively.In 46%of the specimens,routine cytology alone was deemed indeterminate.The addition of either p53 or Ki-67 increased the sensitivity to 51%and 53%,respectively,with perfect specificity,PPV and PLR (100%,100%and infinite).Both stains in combination increased the sensitivity to 57%.While additional staining with CEA and CA19-9 further increased the sensitivity to 86%,the specificity,PPV and PLR were significantly reduced(at minimum 42%,84%and 1,respectively).Markers in all combinations performed poorly as a negative test(NPV 26%to 47%,and NLR 0.27 and 0.70).CONCLUSION:Immunohistochemical staining for p53 and Ki-67 can improve the sensitivity of EUS-FNA to diagnose pancreatic adenocarcinoma.
文摘BACKGROUND Hepatic cirrhosis is associated with greater adverse event rates following surgical procedures and is thought to have a higher risk of complications with interventional procedures in general.However,these same patients often require interventional gastrointestinal procedures such as endoscopic retrograde cholangiopancreatography(ERCP)and endoscopic ultrasound(EUS).While studies examining this scenario exist,the overall body of evidence for adverse event rates associated with ERCP/EUS procedures is more limited.We sought add to the literature by examining the incidence of adverse events after ERCP/EUS procedures in our safety-net hospital population with the hypothesis that severity of cirrhosis correlates with higher adverse event rates.AIM To examine whether increasing severity of cirrhosis is associated with greater incidence of adverse events after interventional ERCP/EUS procedures.METHODS We performed a retrospective study of patients diagnosed with hepatic cirrhosis who underwent ERCP and/or EUS-guided fine needle aspirations/fine needle biopsies from January 1,2016 to March 14,2019 at our safety net hospital.We recorded Child-Pugh and Model for End-stage Liver Disease(MELD-Na)scores at time of procedure,interventions completed,and 30-day post-procedural adverse events.Statistical analyses were done to assess whether Child-Pugh class and MELD-Na score were associated with greater adverse event rates and whether advanced techniques(single-operator cholangioscopy,electrohydraulic lithotripsy/laser lithotripsy,or needle-knife techniques)were associated with higher complication rates.RESULTS 77 procedures performed on 36 patients were included.The study population consisted primarily of middle-aged Hispanic males.30-d procedure-related adverse events included gastrointestinal bleeding(7.8%),infection(6.5%),and bile leak(2%).The effect of Child-Pugh class C vs class A and B significantly predicted adverse events(β=0.55,P<0.01).MELD-Na scores also significantly predicted adverse events(β=0.037,P<0.01).Presence of advanced techniques was not associated with higher adverse events(P>0.05).When MELD-Na scores were added as predictors with the effect of Child-Pugh class C,logistic regression showed MELD-Na scores were a significant predictor of adverse events(P<0.01).The findings held after controlling for age,gender,ethnicity and repeat cases.CONCLUSION Increasing cirrhosis severity predicted adverse events while the presence of advanced techniques did not.MELD-Na score may be more useful in predicting adverse events than Child-Pugh class.
基金Supported by the National Center for Advancing Translational Sciences through University of California,Los Angeles Clinical and Translational Science Institute Grant,No.UL1TR001881-01.
文摘BACKGROUND Endoscopic ultrasound-guided fine needle biopsy(EUS-FNB)has emerged as a safe,efficacious alternative to fine needle aspiration(FNA)for tissue acquisition.EUS-FNB is reported to have higher diagnostic yield while preserving specimen tissue architecture.However,data on the optimal method of EUS-FNB specimen processing is limited.AIM To evaluate EUS-FNB with specimen processing as histology vs EUS-FNA cytology with regards to diagnostic yield and specimen adequacy.METHODS All EUS-FNA and EUS-FNB performed at our institution from July 1,2016,to January 31,2018,were retrospectively analyzed.We collected data on demographics,EUS findings,pathology,clinical outcomes,and procedural complications in two periods,July 2016 through March 2017,and April 2017 through January 2018,with predominant use of FNB in the second data collection time period.FNA specimens were processed as cytology with cell block technique and reviewed by a cytopathologist;FNB specimens were fixed in formalin,processed for histopathologic analysis and immunohistochemical staining,and reviewed by an anatomic pathologist.Final diagnosis was based on surgical pathology when available,repeat biopsy or imaging,and length of clinical follow up.RESULTS One hundred six EUS-FNA and EUS-FNB procedures were performed.FNA alone was performed in 17 patients;in 56 patients,FNB alone was done;and in 33 patients,both FNA and FNB were performed.For all indications,diagnostic yield was 47.1%(8/17)in FNA alone cases,85.7%(48/56)in FNB alone cases,and 84.8%(28/33)in cases where both FNA and FNB were performed(P=0.0039).Specimens were adequate for pathologic evaluation in 52.9%(9/17)of FNA alone cases,in 89.3%(50/56)of FNB alone cases,and 84.8%(28/33)in cases where FNA with FNB were performed(P=0.0049).Tissue could not be aspirated for cytology in 10.0%(5/50)of cases where FNA was done,while in 3.4%(3/89)of FNB cases,tissue could not be obtained for histology.In patients who underwent FNA with FNB,there was a statistically significant difference in both specimen adequacy(P=0.0455)and diagnostic yield(P=0.0455)between the FNA and FNB specimens(processed correspondingly as cytology or histology).CONCLUSION EUS-FNB has a higher diagnostic yield and specimen adequacy than EUS-FNA.In our experience,specimen processing as histology may have contributed to the overall increased diagnostic yield of EUS-FNB.
