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182例胰腺神经内分泌肿瘤的临床病理特征和预后分析 被引量:5
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作者 姜雅慧 张靖宜 +3 位作者 郭玉虹 罗烨 丁婷婷 孙燕 《中国肿瘤临床》 CAS CSCD 北大核心 2019年第21期1107-1116,共10页
目的:探讨胰腺神经内分泌肿瘤(pancreatic neuroendocrine neoplasm,PanNEN)的临床病理特征和预后因素。方法:收集2011年1月至2018年12月天津医科大学肿瘤医院收治的胰腺NEN,依据世界卫生组织(WHO)消化系统肿瘤2019版分类进行复核,分析... 目的:探讨胰腺神经内分泌肿瘤(pancreatic neuroendocrine neoplasm,PanNEN)的临床病理特征和预后因素。方法:收集2011年1月至2018年12月天津医科大学肿瘤医院收治的胰腺NEN,依据世界卫生组织(WHO)消化系统肿瘤2019版分类进行复核,分析比较不同分类胰腺NEN临床病理特征的异同,并分别进行生存分析。结果:在最终确诊的182例PanNEN中,神经内分泌瘤(neuroendocrine tumor,NET)G1、NET G2、NET G3、神经内分泌癌(neuroendocrine carcinoma,NEC)和混合性神经内分泌-非神经内分泌肿瘤(mixed neuroendocrine-non-neuroendocrine neoplasm,MiNEN)分别为78例(42.9%)、82例(45.1%)、5例(2.7%)、15例(8.2%)和2例(1.1%)。临床病理特征方面,胰腺NEN分级越高,神经/脉管侵犯、淋巴结/远处转移等侵袭性行为越多见,诊断时进展期患者的比例越高(均P<0.05)。NEC的Ki-67指数均值显著高于NET G3(P<0.001),但二者在30%~60%区间有重叠。WHO2019版分类与总体生存(overall survival,OS)和无进展生存(progression-free survival,PFS)显著相关(均P<0.05)。对于NET G1患者,诊断时为进展期是OS和PFS较差的独立预后因素(分别HR=12.472,P=0.002;HR=10.56,P<0.0012)。对于NET G2患者,手术切除是OS较好的独立预后因素(HR=8.217,P=0.001),诊断时即有远处转移是PFS较差的独立预后因素(HR=26.137,P<0.001)。NEN G3的预后主要与Ki-67指数有关,但NET G3和NEC的截断值不同(NET G3:45%,NEC:70%)。结论:胰腺NEN是一组异质性肿瘤,不同WHO分类的胰腺NEN的临床病理特征及预后均不同。胰腺NEN以分化好的NET为主,但是部分NET在诊断时即见转移,术后可以复发/转移。NET G3与NEC的鉴别要点主要是肿瘤分化、细胞增殖活性、p53免疫组织化学染色等分子检测。治疗方面仍无统一标准,尤其对于未明确NET G3或NEC的NEN G3患者,需综合评估分级、分期,并监测疾病进展情况。未来仍需多中心大样本的研究来制定更加全面细致的诊疗标准。 展开更多
关键词 胰腺 神经内分泌肿瘤 分类 病理 预后
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Emerging role of deep learning-based artificial intelligence in tumor pathology 被引量:27
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作者 yahui jiang Meng Yang +2 位作者 Shuhao Wang Xiangchun Li Yan Sun 《Cancer Communications》 SCIE 2020年第4期154-166,共13页
The development of digital pathology and progression of state-of-the-art algorithms for computer vision have led to increasing interest in the use of artificial intelligence(AI),especially deep learning(DL)-based AI,i... The development of digital pathology and progression of state-of-the-art algorithms for computer vision have led to increasing interest in the use of artificial intelligence(AI),especially deep learning(DL)-based AI,in tumor pathology.The DL-based algorithms have been developed to conduct all kinds of work involved in tumor pathology,including tumor diagnosis,subtyping,grading,staging,and prognostic prediction,as well as the identification of pathological features,biomarkers and genetic changes.The applications of AI in pathology not only contribute to improve diagnostic accuracy and objectivity but also reduce the workload of pathologists and subsequently enable them to spend additional time on high-level decision-making tasks.In addition,AI is useful for pathologists to meet the requirements of precision oncology.However,there are still some challenges relating to the implementation of AI,including the issues of algorithm validation and interpretability,computing systems,the unbelieving attitude of pathologists,clinicians and patients,as well as regulators and reimbursements.Herein,we present an overview on how AI-based approaches could be integrated into the workflow of pathologists and discuss the challenges and perspectives of the implementation of AI in tumor pathology. 展开更多
关键词 artificial intelligence-assisted bioinformatic analysis artificial intelligence deep learning PATHOLOGY TUMOR
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Immobilization of Cu2+and Cd2+by earthworm manure derived biochar in acidic circumstance 被引量:8
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作者 Zhanghong Wang Fei Shen +2 位作者 Dekui Shen yahui jiang Rui Xiao 《Journal of Environmental Sciences》 SCIE EI CAS CSCD 2017年第3期293-300,共8页
Earthworm manure, the by-product obtained from the disposing of biowastes by earthworm breeding, is largely produced and employed as a feedstock for biochar preparation through pyrolysis. For repairing acidic soil or ... Earthworm manure, the by-product obtained from the disposing of biowastes by earthworm breeding, is largely produced and employed as a feedstock for biochar preparation through pyrolysis. For repairing acidic soil or acidic electroplating effluent, biochar physicochemical properties would suffer from some changes like an acidic washing process, which hence affected its application functions. Pristine biochar (UBC) from pyrolysis of earthworm manure at 700℃ and biochar treated by HCI (WBC) were comparatively investigated regarding their physicochemical properties, adsorption capability and adsorption mechanism of Cu2+ and Cd2+ from aqueous solution to explore the immobilization characteristics of biochar in acidic environment. After HCI treatment, the soluble ash content and phenolic-OH in the WBC sample was notably decreased against the increase of the carboxyl C=O, aromatic C=C and Si-O-Si, compared to that of UBC. All adsorption processes can be well described by Langmuir isotherm model. The calculated maximum adsorption capacity of Cu2+ and Cd2+ adsorption on UBC were 36.56 and 29.31 mg/g, respectively, which were higher than that of WBC (8.64 and 12.81 rag/g, respectively), indicating that HCI treatment significantly decreased biochar adsorption ability. Mechanism analysis revealed that alkali and alkaline earth metallic, salts (carbonates, phosphates and silicates), and surface functional groups were responsible for UBC adsorption, corresponding to ion exchange, precipitation and complexation, respectively. However, ion exchange made little contributions to WBC adsorption due to the great loss of soluble ash content. WBC adsorption was mainly attributed to the abundant exposure of silicates and surface functional groups (carboxyl C=O and aromatic C=C). 展开更多
关键词 Biochar Earthworm manure AdsorptionHC1
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