全文获取类型
收费全文 | 1949篇 |
免费 | 138篇 |
国内免费 | 68篇 |
专业分类
耳鼻咽喉 | 6篇 |
儿科学 | 149篇 |
妇产科学 | 45篇 |
基础医学 | 306篇 |
口腔科学 | 15篇 |
临床医学 | 160篇 |
内科学 | 307篇 |
皮肤病学 | 34篇 |
神经病学 | 114篇 |
特种医学 | 98篇 |
外科学 | 334篇 |
综合类 | 121篇 |
预防医学 | 94篇 |
眼科学 | 21篇 |
药学 | 179篇 |
中国医学 | 5篇 |
肿瘤学 | 167篇 |
出版年
2022年 | 16篇 |
2021年 | 57篇 |
2020年 | 24篇 |
2019年 | 31篇 |
2018年 | 37篇 |
2017年 | 27篇 |
2016年 | 35篇 |
2015年 | 33篇 |
2014年 | 40篇 |
2013年 | 49篇 |
2012年 | 82篇 |
2011年 | 89篇 |
2010年 | 59篇 |
2009年 | 81篇 |
2008年 | 70篇 |
2007年 | 119篇 |
2006年 | 69篇 |
2005年 | 66篇 |
2004年 | 37篇 |
2003年 | 37篇 |
2002年 | 58篇 |
2001年 | 46篇 |
2000年 | 30篇 |
1999年 | 46篇 |
1998年 | 39篇 |
1997年 | 49篇 |
1996年 | 33篇 |
1995年 | 39篇 |
1994年 | 29篇 |
1993年 | 40篇 |
1992年 | 27篇 |
1991年 | 42篇 |
1990年 | 32篇 |
1989年 | 51篇 |
1988年 | 32篇 |
1987年 | 32篇 |
1986年 | 42篇 |
1985年 | 22篇 |
1984年 | 27篇 |
1983年 | 19篇 |
1982年 | 12篇 |
1981年 | 13篇 |
1980年 | 17篇 |
1979年 | 18篇 |
1975年 | 18篇 |
1974年 | 19篇 |
1973年 | 12篇 |
1971年 | 13篇 |
1970年 | 16篇 |
1966年 | 11篇 |
排序方式: 共有2155条查询结果,搜索用时 15 毫秒
1.
Sathiyavelavan Gopalan Jagadesh Chandra Bose S. Periasamy 《The Indian journal of surgery》2015,77(3):232-236
The aim of this study is to review the literature to find out the exact etiology of anastomotic cancers of colon post resection and differentiate them between a recurrence, second primary, and metastatic disease (local manifestation of systemic disease). Web-based literature search was done, and datas collected. We searched PubMed for papers using the keywords colon cancer recurrence, anastomotic recurrence, and recurrent colon carcinoma. We also searched for systematic review in the same topic. In addition, we used our personal referrence archive. Anastomotic recurrences of colon are postulated to arise due to inadequate margins, tumor implantation by exfoliated cells, altered biological properties of bowel anastomosis, and missed synchronous lesions. Some tumors are unique with repeated recurrence after repeated resection. Duration after primary surgery plays a major role in differentiating recurrent and second primary lesions. Repeated recurrences after repeated resections have to be considered a manifestation of systemic disease or metastatic disease due to the virulence of the disease. A detailed analysis and study of patients with colonic anastomotic lesion are required to differentiate it between a recurrent, a second primary lesion, and a metastatic disease (local manifestation of a systemic disease). The nomenclature is significant to study the survival of these patients, as a second primary lesion will have different survival compared to that of recurrent lesions. 相似文献
2.
The initial management of bladder outflow obstruction typically related to benign prostatic hyperplasia (BPH) falls to a large extent within the remit of general practice. Referral onwards to secondary care typically arises following the failure to respond to conservative measures or when complications have supervened; the most significant of which is urinary retention. In the hospital setting, anaesthesia, constipation and immobility are the common precipitants. What follows is a practical guide to the management of these situations and provides an overview of the conservative, medical, minimally invasive and surgical treatments available. 相似文献
3.
4.
5.
6.
7.
8.
Background and Aims
As our population ages and life expectancy increases the number of people aged over 80 and more referred for cardiac surgery is growing. This study sought to identify the outcome of aortic valve replacement (AVR) in octogenarians. 相似文献9.
10.
A Bose 《Journal of the Royal Society of Medicine》1997,90(8):439-442
Merkel cell tumour is an aggressive neuroendocrine neoplasm arising in the dermis. Although only a few hundred cases have been reported worldwide, nine were seen in Nottingham between 1985 and early 1994. The patients were five women and four men age 63-88. One was the first Afro-Caribbean reported to have such a tumour. In no case was the diagnosis made clinically; histological and histochemical examination was necessary. Three of the patients died quickly with metastatic disease. The primary treatment is surgical excision. For advanced disease, radiotherapy is commonly beneficial. 相似文献