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   6450篇
  免费   544篇
  国内免费   126篇
耳鼻咽喉   3篇
儿科学   30篇
妇产科学   928篇
基础医学   316篇
口腔科学   10篇
临床医学   691篇
内科学   223篇
皮肤病学   28篇
神经病学   116篇
特种医学   215篇
外国民族医学   3篇
外科学   1943篇
综合类   970篇
现状与发展   1篇
预防医学   279篇
眼科学   3篇
药学   326篇
  9篇
中国医学   457篇
肿瘤学   569篇
  2024年   16篇
  2023年   126篇
  2022年   188篇
  2021年   298篇
  2020年   353篇
  2019年   286篇
  2018年   249篇
  2017年   326篇
  2016年   285篇
  2015年   304篇
  2014年   513篇
  2013年   467篇
  2012年   403篇
  2011年   480篇
  2010年   338篇
  2009年   300篇
  2008年   302篇
  2007年   329篇
  2006年   275篇
  2005年   206篇
  2004年   186篇
  2003年   143篇
  2002年   98篇
  2001年   95篇
  2000年   61篇
  1999年   65篇
  1998年   60篇
  1997年   52篇
  1996年   51篇
  1995年   27篇
  1994年   26篇
  1993年   21篇
  1992年   27篇
  1991年   20篇
  1990年   16篇
  1989年   13篇
  1988年   18篇
  1987年   11篇
  1986年   11篇
  1985年   24篇
  1984年   13篇
  1983年   8篇
  1982年   12篇
  1981年   5篇
  1980年   9篇
  1979年   2篇
  1978年   1篇
  1975年   1篇
排序方式: 共有7120条查询结果,搜索用时 234 毫秒
81.
Abstract.   Leiva BJL, Bofill RM, Sevin B-U, Geiger XJ. Extranodal Rosai–Dorfman disease as a pelvic mass. Int J Gynecol Cancer 2006; 16(Suppl. 1): 312–315.
Rosai–Dorfman disease (RDD) is a rare histiocytic disorder of unknown cause. RDD most commonly involves the cervical lymph nodes, but extranodal involvement has been described. We report the case of a patient with extranodal RDD that presented as a retroperitoneal mass obstructing the left ureter. The patient underwent surgical resection of the mass, followed by a 5-month course of vinblastine. There was no evidence of progressive disease 22 months after surgery.  相似文献   
82.
Two hundred and eight patients with a clinical stage I endometrial carcinoma were studied (164 fulfilled the inclusion criteria). High risk was defined as nonendometrioid, or endometrioid tumors grade 3 (G3), or G2 with any or G1 with deep (>1/2) myometrial infiltration. The low-risk group consisted of the remaining patients. Surgical staging in the high-risk group included pelvic lymphadenectomy with para-aortic lymphadenectomy in selected cases. Twelve percent of the high-risk patients had nodal metastasis. Patients with low-risk (group A, n = 85) and high-risk disease confined to the uterus (group B, n = 57) did not receive adjuvant radiotherapy. Patients with nodal metastases (group C, n = 10) received postoperative irradiation. The total recurrence rate of the entire population was 12.5%, and the actuarial overall survival, disease-specific survival, and disease-free survival were 90%, 94%, and 88%, respectively. All patients with only vaginal relapse (n = 9) were cured locally with salvage radiotherapy until the date of analysis. The pelvic relapse rate was low as only one patient of group B recurred in the pelvis. In conclusion, lymphadenectomy remains indicated to better select patients at high risk of pelvic recurrence that may benefit from postoperative radiotherapy.  相似文献   
83.
目的观察妇外Ⅳ号保留灌肠治疗慢性盆腔炎的临床疗效。方法随机分为2组比较疗效。治疗组用妇外Ⅳ号保留灌肠配合中药口服治疗92例,对照组单纯采用中药口服治疗63例。观察疗效及血液流变学指标等治疗前后变化。结果治疗组总有效率95·65%,愈显率63·04%,对照组总有效率84·13%,愈显率39·68%,组间有显著性差异,P<0·01;对2组症状积分均值的比较,治疗组亦明显优于对照组,P<0·01;治疗组也能改善血黏度。结论妇外Ⅳ号保留灌肠治疗慢性盆腔炎具有良好疗效,改善血循环是其取得疗效的主要机理。  相似文献   
84.
Objective: To evaluate the efficacy and safety of essential oil treatment for type Ⅲ chronic prostatitis/chronic pelvic pain syndrome(CP/CPPS). Methods: A randomized controlled trial was conducted from December 2014 to October 2015. Seventy type Ⅲ CP/CPPS patients were assigned to the essential oil group(35 cases) or almond placebo oil control group(35 cases) by a random number table. The oil was smeared by self-massage on the suprapubic and sacral region once a day for 4 weeks. The National Institutes of Health Chronic Prostatitis Syndrome Index(NIH-CPSI) and expressed prostatic secretions(EPS) were examined. The primary outcome was NIH-CPSI pain domain. The secondary outcomes included other NIH-CPSI domains and laboratory examinations of EPS. Adverse events were also observed. Results: Sixty-six subjects completed the full 4-week treatment. There was no significant difference between almond oil control and essential oil groups in terms of the total score of NIH-CPSI, pain, quality of life and urination domain scores of NIH-CPSI and EPS examinations(P0.05). In the essential oil group, pain between rectum and testicles(perineum) in the domain of pain or discomfort was significantly reduced at week 2 and week 4 compared with almond oil control group(P0.01). No serious adverse events occurred. Conclusion: The essential oil may reduce the pain or discomfort in the perineum region in patients with CP/CPPS.  相似文献   
85.
郑小叶  张丹  谢晴  马敏涛  王文利 《西部医学》2019,31(12):1935-1938
目的 探讨经会阴四维盆底超声动态成像对初产妇膀胱膨出疾病分级与分型的临床价值。方法 选取西安市第三医院2018年1月~2018年6月收治的盆底功能障碍性疾病(膀胱膨出)初产妇92例为研究对象,根据产妇的分娩方式分为经阴道分娩组(n=46)及剖宫产组(n=46)。在静息、屏气向下用力动作(Valaslva)及缩肛状态下观察两组患者膀胱尿道及盆膈裂孔的超声成像变化,测量膀胱相关参数数值并进行膀胱膨出Green分型。 结果 两组产妇经会阴盆底超声参数比较中,静止期BSD、尿道膀胱后角比较,差异均无统计学意义(均 P>0.05);剖宫产组产妇张力期BSD、尿道膀胱后角及膀胱颈移动度、尿道旋转角均明显小于经阴道分娩组产妇(均 P<0.05)。 经阴道分娩组产妇膀胱膨出Green分型中,Ⅰ型6例(13.04%),Ⅱ型26例(56.52%),Ⅲ型14例(30.43%);剖宫产组产妇膀胱膨出Green分型中,Ⅰ型14例(30.43%),Ⅱ型23例(50.00%),Ⅲ型9例(19.56%)。经阴道分娩组Ⅰ型膀胱膨出者明显少于剖宫产组,差异有统计学意义(P<0.05);而两组产妇Ⅱ型、Ⅲ型膀胱膨出例数比较,差异无统计学意义(P>0.05)。结论 经会阴四维盆底超声检查可清楚显示盆底解剖结构,有效区分不同分娩方式产妇的盆底Green类型,为临床制定治疗方案提供可靠的影像学资料。  相似文献   
86.
本文介绍健康调查简表(SF-36)的发展及引进中国后在临床的应用概况,重点介绍其在妇科以慢性盆腔疼痛为主要症状相关疾病,如盆腔炎、子宫内膜异位症等的应用概况。临床如能将SF-36与特定疾病量表结合,将为妇科慢性盆腔疼痛评估提供一个重要而有意义的工具。  相似文献   
87.
Robotic-assisted radical cystectomy continues to evolve as a surgical option in the management of muscle-invasive bladder cancer. Current oncologic outcomes appear comparable in the short-term with open radical cystectomy. Long-term follow-up, however, remains lacking for this emerging technique. Modern robotic technology allows a comparable extent of pelvic lymph node dissection as open surgery, a previous criticism of the procedure. Complications compare very favorably to open surgery in comparative series, and blood loss and transfusion rates are routinely lower. Length of stay has been shortened in some series, though not uniformly. Finally, robotic assistance can increase the cost of radical cystectomy.  相似文献   
88.
89.
BackgroundOpen pelvic fractures are rare injuries, associated with high patient morbidity and mortality. Few studies have investigated the impact of patient demographics, comorbidities, and injury related factors on complication and mortality rates. The purpose of this study was to: (1) identify the overall incidence of complications and mortality after open pelvic fractures, (2) compare patient factors between those who did and did not develop complications, (3) identify perioperative independent risk factors for complications and mortality.MethodsA query was performed for patients with open pelvic fractures between 2007 and 2017 using the American College of Surgeons National Trauma Data Bank. Patient and injury specific variables were collected and complications were identified using International Classification of Disease Ninth and Tenth edition Codes. Patient demographic and perioperative data was compared using Fisher’s exact test and chi-square test for categorical variables, and Welch’s t-test for continuous variables. Using pooled data from multiple imputations, logistic regressions were used to calculate odds ratios and confidence intervals of independent risk factors for complications.ResultsA total of 19,834 open pelvic fracture cases were identified, with 9622 patients (48.5%) developing at least one complication. Patients who developed complications were older (35.0 vs 38.1 years), and had higher Injury Severity Scores (17.7 vs 26.5), lower Glasgow Coma Scores (14.2 vs 11.7), and a larger proportion presenting with hypotension (21% vs 6.9%). After pooled regression involving 19 factors, these were the strongest independent predictors of inpatient complication and mortality.ConclusionWe report a mortality rate of 14%, with an inclusive complication rate of 48.5%. Evaluating risk factors for morbidity and mortality for this devastating orthopaedic injury provides knowledge of an inherently sparse population.Level of EvidenceLevel II, Retrospective study.  相似文献   
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