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   6085篇
  免费   394篇
  国内免费   126篇
耳鼻咽喉   103篇
儿科学   128篇
妇产科学   64篇
基础医学   947篇
口腔科学   152篇
临床医学   594篇
内科学   1283篇
皮肤病学   132篇
神经病学   474篇
特种医学   485篇
外科学   772篇
综合类   114篇
预防医学   273篇
眼科学   62篇
药学   507篇
中国医学   79篇
肿瘤学   436篇
  2024年   4篇
  2023年   60篇
  2022年   180篇
  2021年   263篇
  2020年   128篇
  2019年   129篇
  2018年   168篇
  2017年   162篇
  2016年   228篇
  2015年   362篇
  2014年   406篇
  2013年   447篇
  2012年   585篇
  2011年   554篇
  2010年   320篇
  2009年   301篇
  2008年   348篇
  2007年   344篇
  2006年   261篇
  2005年   176篇
  2004年   127篇
  2003年   105篇
  2002年   92篇
  2001年   101篇
  2000年   78篇
  1999年   57篇
  1998年   101篇
  1997年   70篇
  1996年   66篇
  1995年   57篇
  1994年   49篇
  1993年   49篇
  1992年   22篇
  1991年   7篇
  1990年   17篇
  1989年   22篇
  1988年   25篇
  1987年   16篇
  1986年   21篇
  1985年   17篇
  1984年   9篇
  1983年   12篇
  1982年   9篇
  1981年   4篇
  1980年   8篇
  1979年   4篇
  1978年   6篇
  1977年   6篇
  1976年   12篇
  1975年   9篇
排序方式: 共有6605条查询结果,搜索用时 15 毫秒
81.
ObjectiveTo report a case of vulvar epithelioid sarcoma, a rare type of tumor that has been reported in 37 cases in the English literature to date.Case reportWe report three cases of vulvar epithelioid sarcoma, proximal type. Wide excisions of the mass were performed with margins free of tumor in all three cases.ConclusionDue to its low incidence, there are no evidence-based diagnostic algorithms or published recommendations for treatment. Locoregional lymph node involvement, vascular invasion, tumor size larger than 2 cm, deep localization, presence of necrosis, and a high mitotic index are known as poor prognostic factors. Adjuvant radiotherapy is advisable in the presence of a high-grade tumor or positive margins. The beneficial effect of adjuvant chemotherapy is not well established. Treatment decisions should be made based on the individual case presentation and pathology evaluation.  相似文献   
82.
We present a case of developmental venous anomaly associated with arteriovenous fistula supplied by a single arterial feeder adjacent to a large acute intracerebral hemorrhage. The arteriovenous fistula was successfully obliterated by superselective embolization while completely preserving the developmental venous anomaly. Two similar cases, including superselective angiographic findings, have been reported in the literature; however, we describe herein superselective angiographic findings in more detail and demonstrate the arteriovenous shunt more clearly than the previous reports. In addition, a literature review was performed to discuss the association of a developmental venous anomaly with vascular lesions.  相似文献   
83.
Pulmonary sequestration is a rare cystic malformation composed of bronchopulmonary tissue that is discontinuous from the tracheobronchial tree and has an anomalous systemic blood supply. We present a case of a 40-y-old male who presented with an extralobar pulmonary sequestration and underwent a laparoscopic retroperitoneal mass excision. Preoperative imaging revealed a large 11.3-cm retroperitoneal tumor consisting of a multiloculated cystic lesion. The patient was discharged home, and at 3-mo follow-up no complaints were reported.  相似文献   
84.
85.
Relapsing polychondritis (RP) is an autoimmune disorder characterized by inflammation in cartilaginous structures including the ears, noses, peripheral joints, and tracheobronchial tree. It rarely involves the central nervous system (CNS) but diagnosis of CNS complication of RP is challenging because it can present with varying clinical features. Herein we report 3 cases of relapsing polychondritis involving CNS with distinct manifestations and clinical courses. The first patient presented with rhombencephalitis resulting in brain edema and death. The second patient had acute cognitive dysfunction due to limbic encephalitis. He was treated with steroid pulse therapy and recovered without sequelae. The third patient suffered aseptic meningitis that presented as dementia, which was refractory to steroid and immune suppressive agents. We also reviewed literature on CNS complications of RP.  相似文献   
86.
87.
88.
89.
90.
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