首页 | 本学科首页   官方微博 | 高级检索  
文章检索
  按 检索   检索词:      
出版年份:   被引次数:   他引次数: 提示:输入*表示无穷大
  收费全文   35906篇
  免费   2880篇
  国内免费   984篇
耳鼻咽喉   104篇
儿科学   958篇
妇产科学   282篇
基础医学   2861篇
口腔科学   111篇
临床医学   2991篇
内科学   21561篇
皮肤病学   144篇
神经病学   907篇
特种医学   892篇
外国民族医学   1篇
外科学   2988篇
综合类   458篇
现状与发展   4篇
预防医学   1237篇
眼科学   49篇
药学   2008篇
中国医学   99篇
肿瘤学   2115篇
  2024年   38篇
  2023年   1647篇
  2022年   2159篇
  2021年   2776篇
  2020年   2207篇
  2019年   1648篇
  2018年   1971篇
  2017年   1697篇
  2016年   1720篇
  2015年   1564篇
  2014年   2980篇
  2013年   2377篇
  2012年   2013篇
  2011年   1977篇
  2010年   1841篇
  2009年   1642篇
  2008年   1314篇
  2007年   1362篇
  2006年   1245篇
  2005年   983篇
  2004年   794篇
  2003年   671篇
  2002年   606篇
  2001年   496篇
  2000年   381篇
  1999年   330篇
  1998年   259篇
  1997年   148篇
  1996年   191篇
  1995年   155篇
  1994年   95篇
  1993年   78篇
  1992年   54篇
  1991年   66篇
  1990年   71篇
  1989年   60篇
  1988年   38篇
  1987年   18篇
  1986年   14篇
  1985年   19篇
  1984年   13篇
  1983年   10篇
  1982年   5篇
  1981年   10篇
  1980年   3篇
  1979年   7篇
  1976年   5篇
  1974年   3篇
  1973年   2篇
  1972年   2篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
51.
52.
Biosketches     
  相似文献   
53.
54.
Globally, hepatocellular carcinoma (HCC) is a frequently diagnosed malignancy with rapidly increasing incidence and mortality rates. Unfortunately, many of these patients are diagnosed in the advanced stages when locoregional treatments are not appropriate. Before 2008, no effective drug treatments existed to prolong survival, until the breakthrough multi-tyrosine kinase inhibitor (TKI) sorafenib was developed. It remained the standard treatment option for advanced HCC for 10 years, with a battery of other candidate drugs in clinical trials failing to produce similar efficacy results. In 2018, the REFLECT trial introduced another multi-TKI, lenvatinib, which has non-inferior overall survival compared with sorafenib. Thus, offering patients and their treating physicians two effective treatment options. Recently, immunotherapy-based drugs, such as atezolizumab and bevacizumab, have shown promising results in patients with unresectable HCC. This review summarizes clinical trial and real-world data studies of sorafenib and lenvatinib in patients with unresectable HCC. We offer guidance on the optimal choice between the two treatments and discuss the potential of immunotherapy-based combination; when more data become available, this will likely make the choice between sorafenib and lenvatinib somewhat obsolete.  相似文献   
55.
56.
57.
58.
59.
ObjectiveTo compare the outcomes of patients with multifocal hepatoblastoma (HB) treated at our institution with either orthotopic liver transplant (OLTx) or hepatic resection to determine outcomes and risk factors for recurrence.BackgroundMultifocality in HB has been shown to be a significant prognostic factor for recurrence and worse outcome. The surgical management of this type of disease is complex and primarily involves OLTx to avoid leaving behind microscopic foci of disease in the remnant liver.MethodsWe performed a retrospective chart review on all patients <18 years of age with multifocal HB treated at our institution between 2000 and 2021. Patient demographics, operative procedure, post-operative course, pathological data, laboratory values, short- and long-term outcomes were analyzed.ResultsA total of 41 patients were identified as having complete radiologic and pathologic inclusion criteria. Twenty-three (56.1%) underwent OLTx and 18 (43.9%) underwent partial hepatectomy. Median length of follow-up across all patients was 3.1 years (IQR 1.1–6.6 years). Cohorts were similar in rates of PRETEXT designation status identified on standardized imaging re-review (p = .22). Three-year overall survival (OS) estimate was 76.8% (95% CI: 60.0%–87.3%). There was no difference in rates of recurrence or overall survival in patients who underwent either resection or OLTx (p = .54 and p = .92 respectively). Older patients (>72 months), patients with a positive porta hepatis margin, and patients with associated tumor thrombus experienced worse recurrence rates and survival. Histopathology demonstrating pleomorphic features independently associated with worse rates of recurrence.ConclusionsThrough proper patient selection, multifocal HB was adequately treated with either partial hepatectomy or OLTx with comparable outcome results. HB with pleomorphic features, increased patient age at diagnosis, involved porta hepatis margin on pathology, and the presence of associated tumor thrombus may be associated with worse outcomes regardless of the local control surgery offered.Level of EvidenceIII.  相似文献   
60.
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号