全文获取类型
收费全文 | 275篇 |
免费 | 18篇 |
国内免费 | 1篇 |
专业分类
儿科学 | 39篇 |
妇产科学 | 8篇 |
基础医学 | 22篇 |
口腔科学 | 1篇 |
临床医学 | 38篇 |
内科学 | 57篇 |
皮肤病学 | 3篇 |
神经病学 | 9篇 |
特种医学 | 9篇 |
外科学 | 55篇 |
综合类 | 1篇 |
预防医学 | 15篇 |
药学 | 18篇 |
肿瘤学 | 19篇 |
出版年
2023年 | 1篇 |
2022年 | 3篇 |
2021年 | 9篇 |
2020年 | 3篇 |
2019年 | 5篇 |
2018年 | 9篇 |
2017年 | 5篇 |
2016年 | 3篇 |
2015年 | 4篇 |
2014年 | 9篇 |
2013年 | 14篇 |
2012年 | 24篇 |
2011年 | 12篇 |
2010年 | 6篇 |
2009年 | 10篇 |
2008年 | 13篇 |
2007年 | 7篇 |
2006年 | 12篇 |
2005年 | 9篇 |
2004年 | 6篇 |
2003年 | 11篇 |
2002年 | 7篇 |
2001年 | 10篇 |
2000年 | 11篇 |
1999年 | 8篇 |
1998年 | 7篇 |
1997年 | 2篇 |
1996年 | 3篇 |
1995年 | 2篇 |
1994年 | 6篇 |
1993年 | 4篇 |
1992年 | 4篇 |
1991年 | 6篇 |
1990年 | 9篇 |
1989年 | 6篇 |
1988年 | 4篇 |
1987年 | 3篇 |
1986年 | 7篇 |
1985年 | 2篇 |
1984年 | 2篇 |
1983年 | 5篇 |
1981年 | 1篇 |
1979年 | 1篇 |
1978年 | 2篇 |
1974年 | 1篇 |
1972年 | 1篇 |
1971年 | 4篇 |
1969年 | 1篇 |
排序方式: 共有294条查询结果,搜索用时 15 毫秒
1.
During a 24-month period, 350 patients were prospectively studied in an effort to determine the perioperative factors in the development of infections after colon and rectal resections. All patients received standard mechanical bowel preparation; perioperative parenteral cefoxitin (group A) or preoperative oral neomycin and erythromycin, in addition to perioperative cefoxitin (Group B), were also given. Both groups were comparable with respect to age, sex, associated diseases, and primary diagnosis. Wound infections developed in nine of 169 (5%) group B patients and in 15 of 141 (11%) group A patients. Stratification by type of operative procedure revealed that the rectal resections involved the highest rate of infection in group A (22%) and in group B (11%). In patients requiring intraperitoneal colon resection, the rates of wound sepsis were similar (3% in both groups). Analysis of length of operation revealed that in operations lasting 215 minutes or more the infection rate was 12%; in those lasting less than 215 minutes the rate was 4%. Patients with rectal resection and operative times of 215 minutes or more had a wound infection rate of 19% compared to 2% (p less than 0.05) in those with shorter nonrectal operations. Group B patients with the longer rectal operations had lower infection rates (11%) than group A patients (27%), while there was no difference among those who had shorter operations. Intra-abdominal abscesses (p less than 0.01) and anastomotic dehiscence (p less than 0.05) were also significantly reduced in group B patients. Postoperative wound infection is associated with length of operation and location of colon resection and can be significantly lowered by a combination of oral and parenteral antibiotics. 相似文献
2.
3.
Parotid gland metastasis from renal carcinoma 总被引:1,自引:0,他引:1
The salivary gland most frequently involved with secondary cancer is the parotid gland. Metastases are responsible for 21-42% of malignant parotid tumors. Malignant melanoma and squamous cell cancer are the two most common tumors to metastasize to the parotid gland. Metastatic adenocarcinoma to this site has rarely been reported. Secondary renal cell carcinoma has been reported in many structures, including the brain, sinonasal tract, lungs, abdomen, genitourinary tract, bone, soft tissue, and lymphatics. Histologically proven parotid metastasis has been previously reported in only one patient. Two patients have recently been diagnosed and treated at our institution for this rare disease. The clinical presentation of each patient was quite different. One patient presented with parotid and pulmonary metastases seven years after resection of a renal tumor. Another patient had resection of a parotid mass revealing an occult metastasis from a renal cell carcinoma. Further evaluation revealed a locally extensive asymptomatic hypernephroma. The survival from the time of discovery of the parotid metastasis was 46 months for the former patient, while the latter patient is alive after 20 months. Differentiation of these tumors from vascular disorders (aneurysm or arteriovenous fistula) required selective angiography and computed tomography. Surgical excision via superficial parotidectomy with facial nerve preservation is necessary for palliation, particularly to avoid massive hemorrhage which may occur upon tumor extension into the oropharynx. 相似文献
4.
Orazio Gabrielli Anna Ficcadenti Giancarlo Fabrizzi Paolo Perri Antonio Mercuri Giovanni V. Coppa Pierluigi Giorgi 《American journal of medical genetics. Part A》1994,53(3):290-293
We report on a male infant with oral, facial, digital, and skeletal anomalies in association with severe psychomotor delay. This may represent a new oral-facial-digital syndrome. © 1994 Wiley-Liss, Inc. 相似文献
5.
Fibroblastic reticular cell tumor of the spleen: report of a case and review of the entity 总被引:4,自引:0,他引:4
Martel M Sarli D Colecchia M Coppa J Romito R Schiavo M Mazzaferro V Rosai J 《Human pathology》2003,34(9):954-957
Fibroblastic reticulum cells (FBRCs) are stromal support cells located in the parafollicular area and deep cortex of lymph nodes and in the extrafollicular areas of the spleen and tonsils. We report a case of malignant FBRC tumor of the spleen occurring in a 61-year-old woman. Two years after splenectomy, multiple hepatic lesions were found, which were resected. Histologically, the tumor showed similar morphological features in the spleen as in the liver metastases. There was a whorled pattern of oval and spindle cells in a collagenized background admixed with an inflammatory cell infiltrate composed of lymphocytes and plasma cells. The tumor cells were positive for common muscle actin, smooth muscle actin, and focally for CD68. In situ hybridization for Epstein Barr virus was negative. To the best of our knowledge, this is the first report of malignant FBRC tumor arising in the spleen. The differential diagnosis of splenic tumors with inflammatory pseudotumor-like features is discussed. 相似文献
6.
Gary B. Deutsch Sandeep Anantha Sathyanarayana Jeffrey Nicastro Ernesto Molmenti Gene Coppa Eugene Rubach Barak Friedman 《The International journal of angiology》2012,21(3):155-158
Meckel diverticula are remnants of the omphalomesenteric duct. They have 2% incidence in the general population, are usually asymptomatic, and tend to be diagnosed incidentally. The generally held principle had been that asymptomatic cases do not require resection, as exemplified by a 2008 systematic review of over 200 studies. However, a recent series reported an increased risk of malignancies, and recommended mandatory resection. We present a case of Meckel diverticulitis with concurrent infiltrative appendiceal carcinoid in a patient with right lower quadrant pain. 相似文献
7.
Patricia M. Marchiaro Luciano Brambilla Jorgelina Morán-Barrio Santiago Revale Fernando Pasteran Alejandro J. Vila Alejandro M. Viale Adriana S. Limansky 《Antimicrobial agents and chemotherapy》2014,58(3):1816-1821
The complete sequence of the carbapenem-resistance-conferring conjugative plasmid pLD209 from a Pseudomonas putida clinical strain is presented. pLD209 is formed by 3 well-defined regions: an adaptability module encompassing a Tn402-like class 1 integron of clinical origin containing blaVIM-2 and aacA4 gene cassettes, partitioning and transfer modules, and a replication module derived from plasmids of environmental bacteria. pLD209 is thus a mosaic of modules originating in both the clinical and environmental (nonclinical) microbiota. 相似文献
8.
9.
10.
Natalia Jorgelina Prado León Ferder Walter Manucha Emiliano Raúl Diez 《Current hypertension reports》2018,20(5):45