【据Hepatology International 2021年8月报道】题:肝细胞来源外泌体可能成为慢加急性肝衰竭患者肝再生和预后评估的生物标志物(作者Jiao Y等)慢加急性肝衰竭(ACLF)患者虽然肝损伤严重,但是部分患者仍可以通过肝脏再生得以存活,因此ACL...【据Hepatology International 2021年8月报道】题:肝细胞来源外泌体可能成为慢加急性肝衰竭患者肝再生和预后评估的生物标志物(作者Jiao Y等)慢加急性肝衰竭(ACLF)患者虽然肝损伤严重,但是部分患者仍可以通过肝脏再生得以存活,因此ACLF患者的肝再生评估尤为重要。外泌体兼具肝脏活组织检查的特异性和外周血检测的非侵袭性的优点,可能是肝脏疾病潜在的生物标志物。本研究旨在建立ACLF肝再生的外泌体表达谱模型,探讨其在肝衰竭患者肝再生及预后评估中的作用。展开更多
Background Integrated positron emission tomography and computed tomography （PET/CT） is increasingly used for the preoperative nodal staging of non-smail cell lung cancer （NSCLC）.The aim of this study was to evalua...Background Integrated positron emission tomography and computed tomography （PET/CT） is increasingly used for the preoperative nodal staging of non-smail cell lung cancer （NSCLC）.The aim of this study was to evaluate the accuracy of PET/CT in comparison with CT in detection of nodal metastasis and preoperative nodal staging in patients with NSCLC,and to analyze the causes of the PET/CT false-negative and false-positive results.Methods Consecutive patients with pathologically proven NSCLC who underwent staging using PET/CT from July 2008 to February 2012 were evaluated retrospectively.Nodal staging was pathologically confirmed on tissue specimens obtained at thoracotomy.The accuracy of PET/CT and CT in the assessment of intrathoracic nodal involvement was determined using histological results as the reference standard.Logistic regression was used to define the causes of the false-negative and false-positive results.Results A total of 528 lymph node stations were evaluated in 101 patients.Lymph nodes were positive for malignancy in 43 out of 101 patients （42.6%）,and 101 out of 528 nodal stations （19.2%）.PET/CT was significantly more accurate for nodal staging than CT.The sensitivity,specificity,positive and negative predictive values,and accuracy of PET/CT for detecting nodal metastasis were 51.5%,95.8%,74.3%,89.3%,and 87.3% and the corresponding data by CT were 45.5%,87.1%,45.5%,87.1%,and 79.2%,respectively.PET/CT confers significantly higher specificity,positive predictive value,and accuracy than CT in detecting nodal metastasis.False-negative results by PET/CT are significantly associated with smaller lymph node size,whereas false-positive results are related to a combination of inflammatory disorders and larger lymph node size.Conclusion PET/CT confers significantly higher accuracy than CT in nodal staging,and is more specific and accurate than CT in detecting nodal metastasis but has a low sensitivity and high false-negative rate.展开更多
文摘【据Hepatology International 2021年8月报道】题:肝细胞来源外泌体可能成为慢加急性肝衰竭患者肝再生和预后评估的生物标志物(作者Jiao Y等)慢加急性肝衰竭(ACLF)患者虽然肝损伤严重,但是部分患者仍可以通过肝脏再生得以存活,因此ACLF患者的肝再生评估尤为重要。外泌体兼具肝脏活组织检查的特异性和外周血检测的非侵袭性的优点,可能是肝脏疾病潜在的生物标志物。本研究旨在建立ACLF肝再生的外泌体表达谱模型,探讨其在肝衰竭患者肝再生及预后评估中的作用。
文摘Background Integrated positron emission tomography and computed tomography （PET/CT） is increasingly used for the preoperative nodal staging of non-smail cell lung cancer （NSCLC）.The aim of this study was to evaluate the accuracy of PET/CT in comparison with CT in detection of nodal metastasis and preoperative nodal staging in patients with NSCLC,and to analyze the causes of the PET/CT false-negative and false-positive results.Methods Consecutive patients with pathologically proven NSCLC who underwent staging using PET/CT from July 2008 to February 2012 were evaluated retrospectively.Nodal staging was pathologically confirmed on tissue specimens obtained at thoracotomy.The accuracy of PET/CT and CT in the assessment of intrathoracic nodal involvement was determined using histological results as the reference standard.Logistic regression was used to define the causes of the false-negative and false-positive results.Results A total of 528 lymph node stations were evaluated in 101 patients.Lymph nodes were positive for malignancy in 43 out of 101 patients （42.6%）,and 101 out of 528 nodal stations （19.2%）.PET/CT was significantly more accurate for nodal staging than CT.The sensitivity,specificity,positive and negative predictive values,and accuracy of PET/CT for detecting nodal metastasis were 51.5%,95.8%,74.3%,89.3%,and 87.3% and the corresponding data by CT were 45.5%,87.1%,45.5%,87.1%,and 79.2%,respectively.PET/CT confers significantly higher specificity,positive predictive value,and accuracy than CT in detecting nodal metastasis.False-negative results by PET/CT are significantly associated with smaller lymph node size,whereas false-positive results are related to a combination of inflammatory disorders and larger lymph node size.Conclusion PET/CT confers significantly higher accuracy than CT in nodal staging,and is more specific and accurate than CT in detecting nodal metastasis but has a low sensitivity and high false-negative rate.
