全文获取类型
收费全文 | 3731篇 |
免费 | 151篇 |
国内免费 | 30篇 |
专业分类
耳鼻咽喉 | 58篇 |
儿科学 | 55篇 |
妇产科学 | 38篇 |
基础医学 | 480篇 |
口腔科学 | 70篇 |
临床医学 | 187篇 |
内科学 | 1009篇 |
皮肤病学 | 64篇 |
神经病学 | 256篇 |
特种医学 | 178篇 |
外科学 | 473篇 |
综合类 | 18篇 |
预防医学 | 83篇 |
眼科学 | 48篇 |
药学 | 277篇 |
中国医学 | 11篇 |
肿瘤学 | 607篇 |
出版年
2023年 | 21篇 |
2022年 | 41篇 |
2021年 | 93篇 |
2020年 | 40篇 |
2019年 | 57篇 |
2018年 | 69篇 |
2017年 | 45篇 |
2016年 | 69篇 |
2015年 | 80篇 |
2014年 | 85篇 |
2013年 | 111篇 |
2012年 | 176篇 |
2011年 | 207篇 |
2010年 | 114篇 |
2009年 | 119篇 |
2008年 | 185篇 |
2007年 | 212篇 |
2006年 | 204篇 |
2005年 | 205篇 |
2004年 | 196篇 |
2003年 | 185篇 |
2002年 | 199篇 |
2001年 | 106篇 |
2000年 | 113篇 |
1999年 | 93篇 |
1998年 | 42篇 |
1997年 | 47篇 |
1996年 | 35篇 |
1995年 | 45篇 |
1994年 | 44篇 |
1993年 | 41篇 |
1992年 | 77篇 |
1991年 | 74篇 |
1990年 | 57篇 |
1989年 | 61篇 |
1988年 | 48篇 |
1987年 | 45篇 |
1986年 | 37篇 |
1985年 | 43篇 |
1984年 | 38篇 |
1983年 | 26篇 |
1982年 | 18篇 |
1981年 | 10篇 |
1980年 | 10篇 |
1979年 | 29篇 |
1978年 | 14篇 |
1977年 | 9篇 |
1976年 | 8篇 |
1974年 | 5篇 |
1927年 | 5篇 |
排序方式: 共有3912条查询结果,搜索用时 15 毫秒
81.
82.
Misaki Kageyama Hideharu Hagiya Yasutaka Ueda Katsuki Ohtani Yasuo Fukumori Norimitsu Inoue Nobutaka Wakamiya Nanoka Yoneda Keigo Kimura Motonori Nagasawa Futoshi Nakagami Isao Nishi Ken Sugimoto Hiromi Rakugi 《Medicine》2021,100(13)
Rationale:Complement deficiency are known to be predisposed to disseminated gonococcal infection (DGI). We herein present a case of DGI involving a Japanese man who latently had a complement 7 deficiency with compound heterozygous variants.Patient concerns:A previously healthy 51-year-old Japanese man complained of sudden-onset high fever. Physical examination revealed various skin lesions including red papules on his trunk and extremities, an impetigo-like pustule on left forearm, and tendinitis of his right forefinger.Diagnosis:Blood culture testing detected gram-negative cocci, which was confirmed to be Neisseria gonorrhoeae based on mass spectrometry and a pathogen-specific PCR test.Interventions:Screening tests for underlying immunocompromised factors uncovered that complement activities (CH50) was undetectable. With a suspicion of a congenital complement deficiency, genetic analysis revealed rare single nucleotide variants in complement 7 (C7), including c.281-1G>T and a novel variant c.1454C>T (p.A485V). CH50 was normally recovered by adding purified human C7 to the patient''s serum, supporting that the patient has C7 deficiency with compound heterozygous variants.Outcomes:Under a diagnosis of DGI, the patient underwent an antibiotic treatment with cefotaxime for a week and was discharged without any sequela.Lessons:DGI is a rare sexually-transmitted infection that potentially induces systemic complications. Complement immunity usually defeats N. gonorrhoeae and prevents the organism from causing DGI. This case highlighted the importance of suspecting a complement deficiency when a person develops DGI. 相似文献
83.
Sumiko Saito Haruko Tashiro Ritsu Sumiyoshi Takuji Matsuo Tadashi Yamamoto Kensuke Matsumoto Jun Ooi Naoki Shirafuji 《Medicine》2021,100(15)
Rationale:Anaplastic lymphoma kinase (ALK) + anaplastic large cell lymphoma (ALCL) is considered as a good prognosis lymphoma. However, in an extremely rare subset of patients, ALK+ ALCL with leukemic presentations is known to be chemotherapy-resistant. Although several novel therapies have been tested, the standard therapy for relapsed/refractory ALK+ ALCL has not been established yet.Patient concerns:An 18-year-old female patient who had conventional chemotherapy- and Brentuximab Vedotin (BV)-resistant ALK+ ALCL with leukemic presentation. She was successfully treated with an ALK inhibitor, crizotinib. Crizotinib induced complete remission (CR) and bridged to allogeneic bone marrow transplantation (BMT).Diagnosis:However, her ALCL relapsed on day 60 after BMT and she developed high grade fever and lymphadenopathy.Intervention:Although crizotinib was given to the patient immediately after relapse, she developed grade 3 nausea and could not continue to take it. Then, we gave alectinib to the patient, which promptly induced sustained CR without any further chemotherapy. The patient received second stem cell transplantation using umbilical cord blood with myeloablative regimen in 2nd CR.Outcomes:The patient has been in CR under maintenance therapy of alectinib for more than 16 months.Lessons:Both ALK inhibitors demonstrated drastic efficacy for our patient who had chemotherapy- and BV-resistant ALK+ ALCL with leukemic presentation. Alectinib showed less gastro-intestinal toxicity than crizotinib and the patient was able to take it even at the relatively early phase of stem cell transplantation. 相似文献
84.
Effect of spironolactone on cardiac sympathetic nerve activity and left ventricular remodeling in patients with dilated cardiomyopathy 总被引:13,自引:0,他引:13
Kasama S Toyama T Kumakura H Takayama Y Ichikawa S Suzuki T Kurabayashi M 《Journal of the American College of Cardiology》2003,41(4):574-581
OBJECTIVES: We sought to evaluate the effects of spironolactone on cardiac sympathetic nerve activity and left ventricular (LV) remodeling in patients with dilated cardiomyopathy (DCM). BACKGROUND: Aldosterone prevents the uptake of norepinephrine and promotes structural remodeling of the heart. Spironolactone, an aldosterone receptor blocker, improves LV remodeling in patients with DCM, but its influence on cardiac sympathetic nerve activity has not been determined. METHODS: We selected 30 patients with DCM who were treated with an angiotensin-converting enzyme inhibitor and a loop diuretic. Fifteen patients were assigned to receive spironolactone additionally, whereas the remaining 15 patients continued their current regimen. The delayed heart/mediastinum (H/M) count ratio, delayed total defect score (TDS), and washout rate (WR) were determined from iodine-123 ((123)I)-meta-iodobenzylguanidine (MIBG) images before and six months after treatment. The left ventricular end-diastolic volume (LVEDV) and left ventricular ejection fraction (LVEF) were determined by echocardiography, and New York Heart Association (NYHA) functional class was estimated.RESULTS: In the spironolactone group, the TDS decreased from 36 +/- 9 to 24 +/- 13 (p < 0.0001), the H/M ratio increased from 1.64 +/- 0.20 to 1.86 +/- 0.27 (p < 0.0001), and WR decreased from 55 +/- 12% to 41 +/- 15% (p < 0.0005). In addition, the LVEDV decreased from 187 +/- 26 to 154 +/- 41 ml (p < 0.005), and LVEF increased from 33 +/- 6% to 39 +/- 6% (p < 0.005). However, there were no significant changes in these parameters in the control group. There was a significant correlation between changes in the (123)I-MIBG findings and changes in LVEDV with spironolactone treatment (TDS: r = 0.684, p = 0.0038; H/M ratio: r = -0.878, p < 0.0001; and WR: r = 0.737, p = 0.0011). The NYHA functional class improved in both groups but showed a greater improvement in the spironolactone group than in the control group (p < 0.01). CONCLUSIONS: Spironolactone improves cardiac sympathetic nerve activity and LV remodeling in patients with DCM. 相似文献
85.
Masaharu Ishihara Ichiro Inoue Takuji Kawagoe Yuji Shimatani Satoshi Kurisu Takaki Hata Yasuharu Nakama Yasufumi Kijima Eisuke Kagawa 《European heart journal》2006,27(20):2413-2419
AIMS: To investigate whether admission hyperglycaemia in non-diabetic patients with acute myocardial infarction (AMI) is a surrogate for previously undiagnosed abnormal glucose tolerance. METHODS AND RESULTS: Two hundred non-diabetic patients with AMI were divided into three groups: 81 patients with admission glucose < 7.8 mmol/L (group 1), 83 patients with admission glucose > or = 7.8 mmol/L and < 11.1 mmol/L (group 2), and 36 patients with admission glucose > or = 11.1 mmol/L (group 3). Abnormal glucose tolerance, diabetes, or impaired glucose tolerance (IGT) was diagnosed by oral glucose tolerance test (OGTT). OGTT identified diabetes in 53 patients (27%) and IGT in 78 patients (39%). When the fasting glucose criteria were applied, however, only 14 patients (7%) were diagnosed as having diabetes. The prevalence of abnormal glucose tolerance was similar among the three groups: 67% in group 1, 63% in group 2, and 69% in group 3 (P = 0.74). The relation of fasting glucose (r2 = 0.50, P < 0.001) and HbA1c (r2 = 0.34, P < 0.001) to 2-h post-load glucose was significant, but the relation of admission glucose to 2-h post-load glucose was not significant (r2 = 0.02, P = 0.08). Multivariable analysis showed that fasting glucose and HbA1c were independent predictors of abnormal glucose tolerance, but admission glucose was not. CONCLUSION: Admission hyperglycaemia in non-diabetic patients with AMI does not represent previously undiagnosed abnormal glucose tolerance. Fasting glucose and HbA1c, rather than admission glucose, may be useful to predict abnormal glucose tolerance. However, these parameters lacked sensitivity. OGTT should be considered in all non-diabetic patients with AMI. 相似文献
86.
Four types of Ipsilateral Breast Tumor Recurrence (IBTR) after breast‐conserving surgery: Classification of IBTR based on precise pathological examination
下载免费PDF全文
![点击此处可从《Pathology international》网站下载免费的PDF全文](/ch/ext_images/free.gif)
Takehiko Sakai Seiichiro Nishimura Akiko Ogiya Masahiko Tanabe Kiyomi Kimura Hidetomo Morizono Kotaro Iijima Yumi Miyagi Masujiro Makita Yoshinori Ito Masahiko Oguchi Rie Horii Futoshi Akiyama Takuji Iwase 《Pathology international》2015,65(3):113-118
We classified ipsilateral breast tumor recurrences (IBTRs) based on strict pathological rules. Ninety‐six women who were surgically treated for IBTR were included. IBTRs were classified according to their origins and were distinguished based on strict pathological rules: relationship between the IBTR and the primary lumpectomy scar, surgical margin status of the primary cancer, and the presence of in situ lesions of IBTR. The prognosis of these subgroups were compared to that of new primary tumors (NP) in the narrow sense (NPn) that occurred far from the scar. Distant‐disease free survival of IBTR that occurred close to the scar with in situ lesions and a negative surgical margin of the primary cancer (NP occurred close to the scar, NPcs) was similar to that of NPn. In contrast, IBTR that occurred close to the scar without in situ lesions (true recurrence (TR) that arose from residual invasive carcinoma foci, TRinv) had significantly poorer prognosis than NPn. IBTR that occurred close to the scar with in situ lesions and a positive surgical margin of the primary cancer (TR arising from a residual in situ lesion, TRis) had more late recurrences than NPcs. Precise pathological examinations indicated four distinct IBTR subtypes with different characteristics. 相似文献
87.
88.
Okusaka Takuji Ikeda Kenji Kudo Masatoshi Finn Richard Qin Shukui Han Kwang-Hyub Cheng Ann-Lii Piscaglia Fabio Kobayashi Masahiro Sung Max Chen Minshan Wyrwicz Lucjan Yoon Jung-Hwan Ren Zhenggang Mody Kalgi Dutcus Corina Tamai Toshiyuki Ren Min Hayato Seiichi Kumada Hiromitsu 《Journal of gastroenterology》2021,56(6):570-580
Journal of Gastroenterology - REFLECT was an open-label, phase 3 study comparing the efficacy and safety of lenvatinib versus sorafenib in patients with unresectable hepatocellular carcinoma... 相似文献
89.
Naoko Ohtani M.D. Kunihiko Kimoto Shunichi Yoshida Tsuguo Tanaka Hideto Inokuchi Keiichi Kawai 《Journal of gastroenterology》1992,27(1):115-120
An arteriovenous malformation of the pancreas is a very rare disease, but its presentation is distinct and unique. In this
report, we describe a patient who presented with this malformation which was localized in the tail of pancreas and demonstrated
by abnormal angiography findings. The patient was a 60-year-old male with severe left hypochondralgia. Angiography revealed
an increased blood volume in the tail of the pancreas with arteriovenous shunting. Secondary pancreatitis caused by the arteriovenous
malformation was suspected by abnormal laboratory data, and confirmed by histology from the resected tail of the pancreas.
This is a very rare report in which pancreatic arteriovenous malformation involving a pancreaticovenous fistula was confirmed
by endoscopic retrograde cholangiopancreatography (ERCP). 相似文献
90.