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   10213篇
  免费   949篇
  国内免费   108篇
耳鼻咽喉   557篇
儿科学   150篇
妇产科学   94篇
基础医学   1006篇
口腔科学   28篇
临床医学   1462篇
内科学   1210篇
皮肤病学   32篇
神经病学   217篇
特种医学   787篇
外科学   1463篇
综合类   1856篇
预防医学   527篇
眼科学   76篇
药学   796篇
  9篇
中国医学   141篇
肿瘤学   859篇
  2024年   131篇
  2023年   170篇
  2022年   332篇
  2021年   392篇
  2020年   402篇
  2019年   292篇
  2018年   306篇
  2017年   360篇
  2016年   426篇
  2015年   415篇
  2014年   807篇
  2013年   709篇
  2012年   700篇
  2011年   689篇
  2010年   641篇
  2009年   497篇
  2008年   500篇
  2007年   451篇
  2006年   439篇
  2005年   358篇
  2004年   288篇
  2003年   270篇
  2002年   191篇
  2001年   196篇
  2000年   152篇
  1999年   147篇
  1998年   116篇
  1997年   99篇
  1996年   81篇
  1995年   78篇
  1994年   71篇
  1993年   60篇
  1992年   40篇
  1991年   57篇
  1990年   49篇
  1989年   39篇
  1988年   37篇
  1987年   46篇
  1986年   28篇
  1985年   34篇
  1984年   36篇
  1983年   16篇
  1982年   23篇
  1981年   13篇
  1980年   15篇
  1979年   12篇
  1978年   15篇
  1977年   9篇
  1975年   9篇
  1974年   4篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
11.
目的:总结手术治疗甲状腺疾病的经验。方法:回顾分析980例患者的临床资料,讨论术中及术后处理的要点。结果:囊内结扎切除法使喉返神经损伤率明显降低;细管负压引流可保持切口清洁,使引流更加彻底;切口皮内缝合法或医用胶粘合法增强了美容效果并可缩短住院时间。结论:手术治疗甲状腺疾病可获得良好效果。  相似文献   
12.
目的:评价甲状腺囊内切除术的合理性和可靠性.方法:回顾性分析2002-03~2004-06施行的382例甲状腺良性疾病囊内切除(n=285)和囊外切除(n=97)的临床资料,将两组术后并发症进行比较和统计学处理.结果:甲状腺囊内切除与囊外切除相比,两组治疗效果相同,甲状腺囊内切除的并发症发生率明显低于囊外切除(P=0.026),暴露因素危险度估计(OR)〈1.结论:甲状腺囊内切除可明显降低手术并发症,是安全可行的手术方法.  相似文献   
13.

Background/Purpose

Intrathyroidal thymic tissue may be misinterpreted as a thyroid lesion in children, leading to invasive tests or resection. We sought to describe the characteristic imaging features of these lesions and to evaluate the safety of non-operative management.

Methods

A retrospective review of all patients less than 18 years old with intrathyroidal thymic tissue from 2000 to 2016 was performed. Data collection included patient demographics, imaging results, interventions, and outcomes.

Results

Eleven patients were identified using institutional radiology and pathology databases. Median patient age and lesion size at presentation were 5 years old (range 2 to 8 years old) and 0.9 cm (range 0.4 to 9.2 cm), respectively. Six lesions were incidentally identified, six were left-sided, and the most common location was the lower pole. Ultrasonographic features were reproducible and included well demarcated (10/11), hypoechoic lesions (11/11), containing punctate/linear internal echoes (11/11), and occasional mild hypervascularity (6/11). All cases demonstrated interval size and echotexture stability over a median surveillance period of 3 years (range 1 to 8 years). While 9 patients were simply observed, the first patient in this series underwent excision, while another had a fine needle aspiration to confirm pathology.

Level of Evidence

Study of diagnostic test, Level IV.

Conclusion

Intrathyroidal thymic tissue has typical clinical and sonographic characteristics which allow for appropriate diagnosis and avoids thyroid resection.  相似文献   
14.

Background

The primary objective of this study was to determine rates of reoperation, ED visits, and hospital readmission after thyroid and parathyroid surgery at a tertiary hospital. A secondary objective was to determine if scores from the American College of Surgeons Surgical Risk Calculator (ACS SRC) predicted these events.

Methods

We retrospectively reviewed the records of patients undergoing parathyroid and thyroid surgery between 2011 and 2014. Patients who underwent an unplanned reoperation, returned to the ED, or were readmitted to hospital were evaluated using the ACS SRC.

Results

436 patients underwent thyroid and parathyroid operations. Rates of re-operations, ED visits and hospital readmissions after thyroid and parathyroid surgery were: 3.4%, 0.6% and 3.0% and 2.2%, 0% and 1.4%, respectively. 71% of patients who experienced post-operative complications scored below average on the ACS SRC, 17% scored above average and 12% scored average risk.

Conclusions

The SRC did not predict re-operation, ED visits, or hospital readmission after thyroid or parathyroid operations.  相似文献   
15.
16.
This Journal recently published a study (Kern et al., 2017) reporting the genetic analysis of the whole HABP2 gene in 11 independent kindreds with familial non medullary thyroid cancer (FNMTC). The Authors showed that a new variant (p.R122W) displayed a minor allele frequency (MAF) significantly higher in FNMTC patients than in controls (7.5 vs 0.73%, p = 0.016) and cosegregated with thyroid cancer in one kindred, thus suggesting the need for the evaluation of its possible pathogenicity in other series.We thus analyzed this new HABP2 p.R122W variant in our wide series of 32 unrelated FNMTC Italian kindreds. The variant was not found in any of the 72 affected and 12 not affected family members.In conclusion, the HABP2R122W was not found in our wide series and it is thus unlikely to be causal to FNMTC. We therefore suggest that careful replication studies should be performed when assessing the possible association between FNMTC risk and any HABP2 variant.  相似文献   
17.
Preoperative optimization and patient education have allowed for the transition of thyroid surgery to the outpatient setting over the last few decades. Performing these operations in the outpatient setting has proven to be cost-effective and safe in the adult population. The purpose of this study is to evaluate the safety and efficacy of outpatient thyroid surgery in the pediatric population. A retrospective review from December 2015 to February 2019 of patients under the age of 18 years of age undergoing thyroidectomy performed by two endocrine surgeons at a large academic was performed. There were 55 consecutive operations performed in 51 patients for thyroid pathology, two were excluded as they were inpatient procedures. Cases were reviewed for complications, unplanned same-day admission, 30-day admission, unplanned reoperation, and death. Mean age was 15 ± 0.3 years (range 9–18 years), 79% of the patients were female. Operations were performed for Graves’ disease (n = 29), thyroid cancer (n = 9), thyroid nodule (n = 6), multinodular goiter (n = 4), Hashimoto’s disease (n = 3), and toxic adenoma (n = 2). Operations performed included: total thyroidectomy (n = 36), thyroid lobectomy (n = 13), total thyroidectomy with lymph node dissection (n = 2), and lateral neck dissection (n = 2). All patients were discharged home within 6 h after completion of the operation. Five (9.4%) patients had transient hypoparathyroidism, with parathyroid hormone levels <10 pg/mL immediately postoperatively. One patient (1.9%) developed a postoperative hematoma on postoperative day six and required reoperation and readmission. Two patients (3.8%) had permanent hypoparathyroidism and one had transient hoarseness (1.9%). There were otherwise no readmissions or ED visits. In conclusion, outpatient thyroid surgery is safe and effective for pediatric patients.  相似文献   
18.
目的:探讨2D与3D腹腔镜手术对甲状腺良性肿瘤患者围手术期临床指标及安全性的影响。方法:选取2016年3月至2018年3月收治的138例甲状腺良性肿瘤患者,以随机数字表法分为2D组(n=69)与3D组(n=69),分别经胸乳入路行2D、3D腹腔镜手术;比较两组患者围手术期临床指标、术后VAS评分、外观满意度及术后并发症发生率。结果:3D组患者手术时间、术中出血量均少于2D组(P<0.05);两组患者术后引流量、总住院时间及住院费用差异无统计学意义(P>0.05);术后第1天、第3天,3D组VAS评分均低于2D组(P<0.05);两组患者术后外观满意度、并发症发生率差异无统计学意义(P>0.05)。结论:相较2D腹腔镜,3D腹腔镜手术用于经胸乳入路甲状腺良性肿瘤切除术能有效降低操作难度,减少医源性创伤,并有助于缓解术后疼痛。  相似文献   
19.
20.
目的:探讨小儿甲状腺腺瘤内镜手术治疗的可行性与疗效。方法回顾性分析2003-2013年我中心开展的35例经腋乳入路腔镜手术治疗的小儿甲状腺腺瘤临床资料,对内镜治疗小儿甲状腺腺瘤的手术适应证、禁忌证、手术方法、疗效进行讨论。结果35例患儿中,男9例,女26例,年龄6~14岁,平均10.2岁;其中单侧28例,双侧7例;腺瘤直径为0.8~5 cm,平均3.2 cm。均表现为颈部无痛性包块。所有病例均在内镜下成功完成甲状腺腺瘤切除术,无一例中转开放手术,无一例发生术后出血。1例术后出现可逆性声音嘶哑(术后4d内恢复),无永久性口周、四肢麻木和(或)手足痉挛、抽搐等。手术时间40~70 min,平均55 min;术中出血5~20 mL,平均10 mL;术后疼痛轻,均未使用术后镇痛;术后住院时间3~6 d,平均4.2 d。所有病例术后随访时间1~10年,无复发。切口瘢痕隐蔽,美容效果好。结论小儿甲状腺腺瘤的内镜手术治疗安全可靠,并发症少,相比传统手术,术后疼痛轻,恢复快,美容效果好。  相似文献   
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