全文获取类型
收费全文 | 8579篇 |
免费 | 361篇 |
国内免费 | 177篇 |
专业分类
耳鼻咽喉 | 309篇 |
儿科学 | 431篇 |
妇产科学 | 241篇 |
基础医学 | 526篇 |
口腔科学 | 504篇 |
临床医学 | 882篇 |
内科学 | 718篇 |
皮肤病学 | 130篇 |
神经病学 | 561篇 |
特种医学 | 665篇 |
外科学 | 2162篇 |
综合类 | 1043篇 |
预防医学 | 202篇 |
眼科学 | 158篇 |
药学 | 279篇 |
5篇 | |
中国医学 | 72篇 |
肿瘤学 | 229篇 |
出版年
2024年 | 7篇 |
2023年 | 90篇 |
2022年 | 143篇 |
2021年 | 269篇 |
2020年 | 222篇 |
2019年 | 190篇 |
2018年 | 165篇 |
2017年 | 217篇 |
2016年 | 232篇 |
2015年 | 234篇 |
2014年 | 470篇 |
2013年 | 516篇 |
2012年 | 411篇 |
2011年 | 433篇 |
2010年 | 407篇 |
2009年 | 482篇 |
2008年 | 489篇 |
2007年 | 453篇 |
2006年 | 455篇 |
2005年 | 415篇 |
2004年 | 333篇 |
2003年 | 288篇 |
2002年 | 211篇 |
2001年 | 204篇 |
2000年 | 163篇 |
1999年 | 161篇 |
1998年 | 144篇 |
1997年 | 142篇 |
1996年 | 135篇 |
1995年 | 121篇 |
1994年 | 97篇 |
1993年 | 97篇 |
1992年 | 82篇 |
1991年 | 80篇 |
1990年 | 80篇 |
1989年 | 57篇 |
1988年 | 48篇 |
1987年 | 51篇 |
1986年 | 40篇 |
1985年 | 66篇 |
1984年 | 44篇 |
1983年 | 20篇 |
1982年 | 33篇 |
1981年 | 32篇 |
1980年 | 25篇 |
1979年 | 25篇 |
1978年 | 10篇 |
1977年 | 12篇 |
1976年 | 6篇 |
1973年 | 4篇 |
排序方式: 共有9117条查询结果,搜索用时 235 毫秒
1.
2.
Christopher Yeh Cem Atillasoy John T. Seykora Vivian Lee 《Journal of cutaneous pathology》2021,48(1):171-173
Respiratory cysts are benign lesions lined by normal respiratory epithelium. There are few reported cases localized to the orbit, while those of the eyelid are exceedingly rare. Respiratory cysts usually arise either from a non‐hereditary congenital malformation, where they are distinguished as choristomatous, or from trauma. Here, we report a case of a 53‐year‐old man who presented with a large right lower eyelid cyst that was histopathologically diagnosed as a respiratory cyst. 相似文献
3.
Rationale:Tarlov or perineurial cysts are nerve root lesions often found in the sacral region. Most perineural cysts (PCs) remain asymptomatic throughout a patient''s life. While their pathogenesis is still unclear, trauma resulting in hemorrhaging into subarachnoid space has been put forward as a possible cause of these cysts. Recently, we worked with a patient experiencing symptomatic PCs after spontaneous subarachnoid hemorrhage.Patient concerns:A 45-year-old man had a coil embolization procedure performed after being diagnosed with a subarachnoid hemorrhage from a ruptured anterior communicating artery. His symptoms were relieved after the procedure, but 7 days later he reported worsening pain in the left perineal area. The pain was intermittent at its onset and exacerbated by sitting, walking, and coughing.Diagnoses:Two weeks after the embolization procedure, a lumbar spine MRI revealed 2 PCs at the S1 and S2 level affecting the left S2 root with high signal intensity in T2 and T1 images, suggestive of bleeding within the cyst.Interventions:We operated using a posterior approach. Cyst fenestration was done after S1 laminectomy. We aspirated approximately 1 cc of old blood.Outcomes:His pain was relieved immediately after cyst removal and no neurologic deterioration occurred during the postoperative period.Lessons:Subarachnoid hemorrhage can be the source of the development of pain from asymptomatic PCs, making them symptomatic. Surgical extirpation is 1 treatment option for these symptomatic PCs. 相似文献
4.
Gudrun Aspelund Elaa M Mahdi David H Rothstein Derek S Wakeman 《Journal of gastroenterology and hepatology》2019,34(6):966-974
Choledochal cysts (CDCs) and biliary atresia (BA) are rare pediatric hepatobiliary anomalies that require surgical intervention due to increased risk of malignancy and liver failure, respectively. The underlying disease and operative procedures place patients at risk for long‐term complications, which may continue to affect them into adulthood. Lack of a transitional care model in the health‐care system potentiates the challenges they will face following aging out of their pediatric providers' care. We sought to elucidate the long‐term complications and challenges patients with CDCs and BA face, review the current literature regarding transitioning care, and propose guidelines aiding adult providers in continued care and surveillance of these patients. A literature review was performed to assess short‐term and long‐term complications after surgery and the current standards for transitioning care in patients with a history of CDCs and BA. While transitional programs exist for patients with other gastrointestinal diseases, there are few that focus on CDCs or BA. Generally, authors encourage medical record transmission from pediatric to adult providers, ensuring accuracy of information and compliance with treatment plans. Patients with CDCs are at risk for developing biliary malignancies, cholangitis, and anastomotic strictures after resection. Patients with BA develop progressive liver failure, necessitating transplantation. There are no consensus guidelines regarding timing of follow up for these patients. Based on the best available evidence, we propose a schema for long‐term surveillance. 相似文献
5.
目的:探讨先天性胆总管囊肿的诊断、治疗及并发症的防治。方法:对22例先天性胆总管囊肿的患者进行分析。结果:21例行囊肿切除、胆总管空肠Roux-Y吻合术。1例单纯囊肿空肠吻合,并发症4例,无死亡病例。结论:及时、谨慎的诊断,合理的手术方式和时机,充分的术前准备及规范的操作是提高先天性胆总管囊肿的治愈率,降低并发症和死亡率的关键。 相似文献
6.
Hidir Esme MD Huseyin Fidan MD Ahmet Cekirdekci MD 《Indian Journal of Thoracic and Cardiovascular Surgery》2006,22(2):137-140
Background Hydatid disease is the most severe helminthic zoonosis, with an important public health problem especially in rural areas
in Turkey. The aim of this study was to review the problems and advantages encountered in surgical treatment of 43 patients
who were ventilated with one-lung ventilation during last four years.
Methods Patients, operated with one-lung ventilation, constitute the study group. Data related to symptoms, radiographic findings,
performed surgical procedures, perioperative and postoperative morbidity, hospitalization time, and cyst recurrence were collected
from each individual's records.
Results Cystotomy and capitonnage were performed in all cases. Perioperative complications were seen in 5 patients. Four of these
5 patients had double-lumen endotracheal tube malpositioning. In one patient hypoxemia developed. The most common postoperative
complication was atelectasis. One patient had recurrent cysts. There was no perioperative or postoperative death.
Conclusions We prefer cystotomy and capitonnage because it is a fast and effective technique with limited postoperative complications.
One-lung ventilation prevents the exposure of lower lung areas from massive aspiration, which may cause acute obstruction
of airways, and contamination by cyst contents from the operative part of the lung that causes recurrent disease. One-lung
ventilation in pulmonary hydatid cyst surgery may be preferred owing to lower mortality and morbidity rates. 相似文献
7.
输尿管囊肿的X线征象分析 总被引:3,自引:0,他引:3
目的总结输尿管囊肿的X线表现,以提高对该病的认识。方法搜集1995年1月至2005年12月间经手术、病理证实的输尿管囊肿18例,回顾性分析其X线表现。结果18例输尿管囊肿中,发生在单侧者16例,双侧2例。15例出现膀胱内边界清晰的充盈缺损,16例显示“光晕征”,12例显示“蛇头征”。结论输尿管囊肿有典型的影像学表现,静脉尿路造影可明确诊断,为手术提供可靠的影像资料。 相似文献
8.
9.
10.