全文获取类型
收费全文 | 1890篇 |
免费 | 130篇 |
国内免费 | 27篇 |
专业分类
耳鼻咽喉 | 11篇 |
儿科学 | 67篇 |
妇产科学 | 9篇 |
基础医学 | 174篇 |
口腔科学 | 6篇 |
临床医学 | 206篇 |
内科学 | 652篇 |
皮肤病学 | 46篇 |
神经病学 | 84篇 |
特种医学 | 85篇 |
外科学 | 171篇 |
综合类 | 272篇 |
预防医学 | 34篇 |
眼科学 | 113篇 |
药学 | 71篇 |
3篇 | |
中国医学 | 29篇 |
肿瘤学 | 14篇 |
出版年
2023年 | 43篇 |
2022年 | 77篇 |
2021年 | 83篇 |
2020年 | 67篇 |
2019年 | 74篇 |
2018年 | 96篇 |
2017年 | 74篇 |
2016年 | 71篇 |
2015年 | 68篇 |
2014年 | 104篇 |
2013年 | 147篇 |
2012年 | 94篇 |
2011年 | 96篇 |
2010年 | 79篇 |
2009年 | 69篇 |
2008年 | 77篇 |
2007年 | 97篇 |
2006年 | 73篇 |
2005年 | 66篇 |
2004年 | 65篇 |
2003年 | 37篇 |
2002年 | 41篇 |
2001年 | 30篇 |
2000年 | 37篇 |
1999年 | 39篇 |
1998年 | 16篇 |
1997年 | 19篇 |
1996年 | 18篇 |
1995年 | 7篇 |
1994年 | 16篇 |
1993年 | 12篇 |
1992年 | 29篇 |
1991年 | 12篇 |
1990年 | 14篇 |
1989年 | 14篇 |
1988年 | 8篇 |
1987年 | 4篇 |
1986年 | 17篇 |
1985年 | 5篇 |
1984年 | 10篇 |
1983年 | 6篇 |
1982年 | 10篇 |
1981年 | 4篇 |
1980年 | 4篇 |
1979年 | 8篇 |
1978年 | 4篇 |
1977年 | 2篇 |
1976年 | 2篇 |
1973年 | 1篇 |
1967年 | 1篇 |
排序方式: 共有2047条查询结果,搜索用时 15 毫秒
101.
Juvenile temporal arteritis associated with Kimura's disease 总被引:3,自引:0,他引:3
Fukunaga M 《APMIS : acta pathologica, microbiologica, et immunologica Scandinavica》2005,113(5):379-384
A case of juvenile temporal arteritis, which is a rare vascular lesion in children and young adults, associated with Kimura's disease in a healthy 23-year-old asymptomatic man is described. The patient presented with a painless 2.5 cm nodule with eosinophilia and normal erythrocyte sedimentation rate. Histologically, the left superficial artery showed marked intimal thickening with moderate eosinophilic infiltrates, constriction of the vascular lumen, focal disruptions of the internal elastic lamina and media, moderate eosinophilic infiltrates in the adventia, and absence of giant cells. The subcutaneous tissue surrounding the artery was characterized by lymphofollicular hyperplasia, marked eosinophilic infiltrates in the intra- and extra-follicles with abscess, capillary proliferations, lymphocytic, plasma cell and mast cell infiltrates, and fibrosis in the interfollicular region. Immunohistochemically, reticular, positive IgE staining was observed in the germinal centers. Clinically and histologically, the lesion was consistent with juvenile temporal arteritis associated with Kimura's disease. The findings indicate that both entities are closely related and juvenile temporal arteritis may be secondary to Kimura's disease. 相似文献
102.
Wong PC 《Respirology (Carlton, Vic.)》2005,10(2):144-148
Management of patients with tuberculous pleuritis can be improved by establishing early diagnosis accurately, administering effective chemotherapy, and close monitoring of progress for early detection and prompt management of severe pleural inflammation in the hope of preventing or reducing subsequent residual pleural fibrosis. In addition to the conventional diagnostic tools, chemical markers, especially pleural fluid adenosine deaminase and interferon-gamma levels and new microbiological tests such as polymerase chain reaction and BACTEC culture of pleural biopsy specimens for Mycobacterium tuberculosis, can increase the diagnostic yield for tuberculous pleuritis. Indicators of the severity of pleural inflammation, including high pleural fluid tumour necrosis factor-alpha and lysozyme levels, and low pleural fluid glucose and pH, can help to predict residual pleural fibrosis. It is likely that patients will require surgery: (i) complete drainage of pleural fluid for prevention; and (ii) pleurectomy for the treatment of residual pleural fibrosis. 相似文献
103.
Amor-Dorado JC Llorca J Costa-Ribas C Garcia-Porrua C Gonzalez-Gay MA 《The Laryngoscope》2004,114(8):1420-1425
OBJECTIVE: To assess the incidence and characteristics of both benign paroxysmal positional vertigo (BPPV) and positional nystagmus in a series of patients with giant cell arteritis (GCA). STUDY DESIGN: Patients diagnosed with GCA between June 1999 and May 2001 at the single hospital for a defined population were examined prospectively. METHOD: Patients included in this study fulfilled the 1990 American College of Rheumatology classification criteria for GCA. Otologic and oculographic studies were performed. Type, frequency, and outcome of positional oculographic findings was assessed. Patients were required to have been examined within 1 week after the onset of corticosteroid therapy. Data found in GCA patients were compared with those observed in an age, sex, and ethnically matched control population. Further studies in patients and controls were performed 3 and 6 months later. RESULTS: Forty-four patients and 44 matched controls were included in this study. Nine (20.5%) GCA patients fulfilled diagnostic criteria of BPPV compared with only 1 (2.3%) of the controls (P =.007). In seven of these nine GCA patients, BPPV was related to the posterior and two to the horizontal semicircular canals, respectively. Horizontal nystagmus was found in seven GCA patients who developed nystagmus in the head hanging position test compared with none in the controls (P =.006). CONCLUSIONS: The present study shows a higher frequency of BPPV in GCA than in matched controls. Because most clinical manifestations in GCA are caused by ischemic complications, our results suggest an ischemic etiology as responsible for BPPV in these elderly patients. According to these results, GCA may constitute a new association with BPPV. 相似文献
104.
We present an extremely rare case of a patient with focal hypertrophic pachymeningitis in association with histologically proven temporal arteritis (giant cell arteritis). It is proposed that focal hypertrophic pachymeningitis in itself is the contributing factor to severe headache rather than temporal arteritis alone. 相似文献
105.
Takayasu's arteritis is a rare idiopathic arteriopathy that produces narrowing and eventually closure of affected blood vessels. Ocular symptoms typically occur late in the disease process in those individuals who have severe involvement of the aortic arch and the carotid arteries. Visual loss typically occurs as a result of either systemic hypertension or concomitant ocular hypo-perfusion. We describe an unusual case of Takayasu's arteritis presenting in a child who complained of painful blurred vision. In this individual, no carotid artery disease was identified on vascular imaging and no evidence of impairment of ocular perfusion was demonstrable. Vision loss in this instance was due to anterior uveitis and cystoid maculopathy. These are atypical and rarely described features of Takayasu's arteritis. The patient responded well to anti-inflammatory treatment and his symptoms resolved. The clinical significance of these findings are discussed and the relevant literature reviewed. 相似文献
106.
The current report describes a female patient with Takayasus arteritis who was hospitalized because of respiratory complaints and a ventilation-perfusion (V/P) scan demonstrating severe perfusion defects with normal ventilation. Her symptoms and V/P scan results were initially interpreted as massive pulmonary embolism, but a spiral computed tomography (CT) of the chest and a repeated lung scan indicated inflammatory involvement of the pulmonary artery accounting for the positive lung scan study. Review of her medical records from 17 years ago revealed that similar symptoms and a positive V/P scan were the initial features of her disease. 相似文献
107.
A 26-year-old Asian woman presented with bilateral disk swelling, retinal exudates and infarcts. Evaluation found the underlying cause of the hypertensive optic neuropathy to be renal artery stenosis due to Takayasu's arteritis. 相似文献
108.
Imaging of large vessel vasculitis with <Superscript>18</Superscript>FDG PET: illusion or reality? A critical review of the literature data 总被引:1,自引:0,他引:1
Belhocine T Blockmans D Hustinx R Vandevivere J Mortelmans L 《European journal of nuclear medicine and molecular imaging》2003,30(9):1305-1313
Fluorine-18 fluorodeoxyglucose positron emission tomography (18FDG PET) plays a major role in the management of oncology patients. Owing to the singular properties of the glucose tracer, many patients suffering from non-malignant diseases such as inflammatory or infectious diseases may also derive clinical benefit from the appropriate use of metabolic imaging. Large vessel vasculitides such as giant cell arteritis and Takayasu arteritis are other examples that may potentially extend the field of 18FDG PET indications. The purpose of the present article is to assess the feasibility of metabolic imaging in vasculitis on the basis of the current literature data. In particular, the clinical context and the 18FDG imaging patterns seen in patients with large vessel vasculitis are analysed in order to identify potential indications for metabolic imaging.T. Belhocine and D. Blockmans contributed equally to this review article. 相似文献
109.
OBJECTIVE: The sensory and motor functions in severe tuberculous meningitis (TBM) may be difficult to assess clinically and may be helped by evoked potential studies. Lack of motor and somatosensory evoked potential studies in TBM prompted the present study. METHODS: All the patients with TBM underwent detailed neurological evaluation and cranial CT scan study. Motor and somatosensory evoked potentials to both upper and lower limbs were carried out bilaterally. The outcome was defined on the basis of 3 month Barthel Index (BI) score into good (BI > 12) and poor (BI < 12). RESULTS: Forty-one highly probable patients with TBM whose ages ranged between 8 and 64 years and 14 of whom were females were included in this study. Twenty-three patients were in stage III (meningitis, neurological signs and altered sensorium), 12 in stage II (meningitis with neurological sign) and the remaining patients were in stage I (meningitis only). Cranial CT scan was carried out in all and MRI in 18 patients. On CT scan hydrocephalus was present in 21, infarction in 14 and tuberculoma in 4 patients. Motor evoked potential (MEP) was abnormal in 18 patients (36 limbs) and SEP in 9 patients (23 limbs). Upper limb central motor conduction time to abductor digiti minimi (CMCT-ADM) was abnormal in 15 and that to tibialis anterior (TA) in 21 limbs. CMCT abnormality was lateralized in 6 and only upper or lower limbs were involved in 11 patients. The SEP abnormalities were lateralized in 2 patients and only upper or lower limbs were involved in 3. The MEP changes correlated with stage of TBM and outcome whereas SEP with outcome only. CONCLUSION: Motor and somatosensory evoked potentials may be helpful in objective documentation of respective motor and sensory functions in TBM patients with altered sensorium. 相似文献
110.
目的观察康复新液对颈淋巴结核的辅助治疗效果。方法将2012年6月~2013年6月江苏省无锡市第五人民医院收治的100例颈淋巴结核患者按随机数字表法分为对照组和治疗组,每组50例。对照组常规应用利福平、异烟肼、吡嗪酰胺、乙胺丁醇进行抗结核治疗,治疗组在对照组的基础上加用康复新液。比较不同时间两组患者的症状缓解率、淋巴结吸收率、术后复发率和不良反应及并发症情况。结果治疗组1个月、3个月和6个月临床症状缓解率为90%、98%和100%,较对照组的58%、68%和86%显著升高,差异有高度统计学意义(P〈0.01)。治疗组1个月、3个月和6个月的淋巴结吸收率分别为64%、86%和94%,高于对照组的32%、60%和84%,差异有统计学意义(P〈0.05)。与对照组比较,治疗组患者术后复发率和不良反应及并发症的发生率均降低,差异有统计学意义(P〈0.05)。结论康复新液联合常规抗结核药可提高颈部淋巴结核的症状缓解率和淋巴结吸收率,降低复发率和不良反应及并发症的发生率,值得临床推广使用。 相似文献