全文获取类型
收费全文 | 5715篇 |
免费 | 229篇 |
国内免费 | 29篇 |
专业分类
耳鼻咽喉 | 34篇 |
儿科学 | 103篇 |
妇产科学 | 51篇 |
基础医学 | 561篇 |
口腔科学 | 78篇 |
临床医学 | 359篇 |
内科学 | 1441篇 |
皮肤病学 | 107篇 |
神经病学 | 485篇 |
特种医学 | 159篇 |
外科学 | 1115篇 |
综合类 | 23篇 |
预防医学 | 157篇 |
眼科学 | 115篇 |
药学 | 394篇 |
中国医学 | 11篇 |
肿瘤学 | 780篇 |
出版年
2023年 | 28篇 |
2022年 | 55篇 |
2021年 | 93篇 |
2020年 | 66篇 |
2019年 | 65篇 |
2018年 | 90篇 |
2017年 | 87篇 |
2016年 | 100篇 |
2015年 | 126篇 |
2014年 | 146篇 |
2013年 | 211篇 |
2012年 | 293篇 |
2011年 | 402篇 |
2010年 | 202篇 |
2009年 | 177篇 |
2008年 | 323篇 |
2007年 | 425篇 |
2006年 | 422篇 |
2005年 | 399篇 |
2004年 | 397篇 |
2003年 | 416篇 |
2002年 | 451篇 |
2001年 | 45篇 |
2000年 | 59篇 |
1999年 | 63篇 |
1998年 | 132篇 |
1997年 | 82篇 |
1996年 | 85篇 |
1995年 | 59篇 |
1994年 | 53篇 |
1993年 | 48篇 |
1992年 | 37篇 |
1991年 | 45篇 |
1990年 | 38篇 |
1989年 | 32篇 |
1988年 | 24篇 |
1987年 | 27篇 |
1986年 | 17篇 |
1985年 | 21篇 |
1984年 | 18篇 |
1983年 | 11篇 |
1982年 | 9篇 |
1981年 | 12篇 |
1980年 | 19篇 |
1979年 | 10篇 |
1978年 | 9篇 |
1977年 | 11篇 |
1975年 | 6篇 |
1974年 | 6篇 |
1971年 | 4篇 |
排序方式: 共有5973条查询结果,搜索用时 15 毫秒
101.
102.
103.
104.
Keisuke Kidoguchi Yasushi Kubota Shun Fujimoto Yasuhisa Sakata Haruna Kizuka-Sano Kyosuke Yamaguchi Hiroshi Ureshino Hiroo Katsuya Toshihiko Ando Motohiro Esaki Shinya Kimura 《Internal medicine (Tokyo, Japan)》2021,60(10):1601
Cronkhite-Canada syndrome (CCS) is a rare polyposis disorder accompanied by alopecia and onychodystrophy. A 63-year-old man with a history of CCS and repeated embolism developed progressive thrombocytopenia and mild anemia. Laboratory testing, a bone marrow examination, and magnetic resonance imaging of the spine resulted in a diagnosis of concurrent aplastic anemia (AA). Paroxysmal nocturnal hemoglobinuria (PNH)-type cells were detected in a peripheral blood specimen. In addition, human leukocyte antigen (HLA) included DRB1*15:01 and DRB1*15:02. Mesalazine was discontinued in consideration of possible drug-induced pancytopenia. Immunosuppressive therapy ameliorated both the gastrointestinal symptoms of CCS and pancytopenia. A common autoimmune abnormality might underlie both CCS and AA. 相似文献
105.
Sato T Yamadori I Fujita J Hamada N Yonei T Bandoh S Ohtsuki Y Ishida T 《Internal medicine (Tokyo, Japan)》2004,43(8):721-726
NSIP associated with primary lung cancer has been rarely reported. In the present report, three cases of histologically proven non-specific interstitial pneumonia (NSIP) associated with primary lung cancer are described. Importantly, in our 3 cases, interstitial pneumonia which is histologically proven to be NSIP was observed diffusely in both lungs. NSIP in these 3 cases responded to steroid therapy. However, 2 patients died from primary lung cancer and 1 patient died from progression of the interstitial pneumonia. Although the association between lung cancer and NSIP has been rarely documented, this combination was considered to be one of the paraneoplastic phenomena. The possible association between primary lung cancer and NSIP is discussed. 相似文献
106.
Yoshisato Tanimoto Hirotaka Tashiro Toshiyuki Itamoto Naoyuki Toyota Toshihiko Kohashi Hironobu Amano Hideki Ohdan Kohei Ishiyama Akihiko Oshita Toshimasa Asahara 《Journal of hepato-biliary-pancreatic sciences》2008,15(2):228-231
Hepatic venous outflow obstruction is a relatively uncommon but important and devastating complication occurring after liver transplantation. Recently, right lateral sector liver grafts have sometimes been used in living-donor liver transplantation (LDLT), but, to our knowledge, early hepatic venous outflow obstruction has never been reported in right lateral sector LDLT. A 58-year-old woman was diagnosed with liver cirrhosis and hepatocellular carcinoma and underwent right lateral sector LDLT. Postoperatively, she developed liver dysfunction. Doppler ultrasound examination revealed flat waveforms and low-flow velocity in the right hepatic vein (RHV). A computed tomography (CT) scan revealed a ventrally distorted RHV due to hypertrophy of the liver graft. Hepatic venous obstruction was suspected and a hepatic venogram was performed. The venogram revealed stenosis of the RHV due to the distortion of the vein. We performed percutaneous transfemoral balloon dilatation, but this was not effective. We then inserted an expandable metallic stent (EMS) into the RHV. After the EMS placement, the condition of the patient improved. Venogram and CT data suggested that the obstruction of the RHV developed because of distortion of the RHV to the ventral side during liver regeneration. 相似文献
107.
Iwamoto T Kimura A Nakai T Kanaya K Ishimaru S 《Journal of atherosclerosis and thrombosis》2004,11(6):348-353
The pathophysiology of aortic aneurysm is complex and it has remained unclear how frequently arteriomegaly, a diffuse dilatation of the artery, is associated with aneurysm. Therefore, ultrasonic study of the carotid artery was conducted to clarify this issue in a large number of subjects. Carotid ultrasonography was performed in 1,108 Japanese men aged 50 or older, and the results of 379 patients with arteriosclerotic aortic aneurysm (AA) were compared with those of 211 patients with peripheral arterial disease, 65 patients with aortic dissection, 232 hypertensive subjects, and 221 normotensive subjects. The carotid diameter was measured bilaterally at two points on the common carotid artery, and we defined carotid arteriomegaly as an arterial diameter in the 95th percentile or above that in the normotensive control group according to the relevant age subgroups. The incidence of carotid arteriomegaly in the AA group (25.9%) was significantly higher than in the other groups (p < 0.01) even when adjusted for body height and blood pressure. In the arteriomegaly subgroup, hypertension and cigarette smoking was significantly more frequent than in the non-dilated artery subgroup. This study demonstrates that one fourth of patients with aortic aneurysm have arteriomegaly as a generalized systemic abnormality in the arterial wall. 相似文献
108.
Sekiuchi M Nakabayashi K Marumo T Arimura Y Nagasawa T Yamada A Fujioka Y 《Modern rheumatology / the Japan Rheumatism Association》2005,15(2):126-129
Allergic granulomatous angiitis (AGA) is a disease entity that was first distinguished from classical polyarteritis nodosa by Churg and Strauss in 1951, and is characterized by the clinical features of allergic rhinitis or bronchial asthma, eosinophilia, and vasculitis. Allergic granulomatous angiitis has been described to mainly involve small vessels. We herein describe a case of Churg–Strauss syndrome which demonstrated the clinical and laboratory findings supporting a diagnosis of AGA and was also associated with the clinical and pathological findings for temporal arteritis, which was characterized by eosinophil infiltration and granuloma formation of the temporal artery (middle-sized vessel). 相似文献
109.
Miyaji H Sakurai H Kikawada M Yamaguchi K Kimura A Fujiwara T Imada N Imai M Iwamoto T Takasaki M 《Nihon Ronen Igakkai zasshi. Japanese journal of geriatrics》2005,42(1):90-98
The treatment of bedsores is a particular problem in geriatric medicine. We selected standard drugs that may be effective for the decubitus ulcer, and investigated combination therapy to develop efficient treatment The subjects were 16 patients in whom the grade of the bedsore was evaluated as II to IV according to the Shea's depth classification. Treatment was performed while all patients were on air mats. We selected drugs and treatment methods based on the previously established experimental design of Taguchi. Based on this, we created and adapted 16 different component combination treatment programs in accordance with the L16 rectangular cross table. The following component factors were adopted: A: types of covering substances on the wound surface (Elase ointment, isodine sugar, isodine gel solcoseryl ointment); B: Isalopan powder; C: Spray of 10 ml physiological saline containing 500 microg of prostaglandin (concentration 0.005%); D: daily number of treatments; and F: presence or absence of tapping. We serially measured the wound surface area as an index of the speed of wound healing, and measured the interval (day) until the area decreased to one half of the original size (T1/2, half life). We analyzed data on one combination treatment each in 16 patients. Analysis of variance of the above factors showed significant F values for factors A, B, D and F. The contribution rates for factors A, B, D and F were 37.84%, 8.47%, 14.98% and 13.81%, respectively. The error term (e) was 16.37%. Optimal results were seen in the groups in which solcoseryl ointment had been applied twice a day. In this study, prostaglandin, which had been anticipated to be effective, did not show any effects. The error term (e) suggests the presence of other healing factors including individual differences. Concerning this point, it well be necessary to examine a larger number of patients in the future. With ointment treatment alone, without using an air mat, it was confirmed that bedsore area reduction was extremely unstable. Decompression of the affected part may be a basic prevention factor and essential treatment of bedsores. 相似文献
110.
Koichi Kimura Eisuke Adachi Ayako Toyohara Sachie Omori Kaoru Ezaki Ryo Ihara Takahiro Higashi Kippei Ohgaki Shuhei Ito Shin-ichiro Maehara Toshihiko Nakamura Fumiyoshi Fushimi Yoshihiko Maehara 《World Journal of Clinical Cases》2021,9(17):4453-4459
BACKGROUNDSchwannoma of the pancreas is extremely rare. We report a case of pancreatic schwannoma that was difficult to distinguish from pancreatic carcinoma before surgery.CASE SUMMARYA 66-year-old male underwent a right-lobe hepatectomy for hepatocellular carcinoma. Post-surgical computed tomography showed a 10 mm long solid mass with ischemia, with no expansion into the main pancreatic duct. Upon magnetic resonance cholangiopancreatography, the tumor had high signal intensity in diffusion weighted images, consistent with pancreatic carcinoma. Endoscopic ultrasound (EUS) was performed to obtain more information about the tumor, and showed a 14 mm solid and hypoechoic mass in the pancreatic body. Contrast enhanced EUS revealed that the tumor showed a hyperechoic mass in the early phase, and the contrasting effect continuation was very short; findings also consistent with pancreatic carcinoma. Thus, we preoperatively diagnosed his condition as a pancreatic carcinoma and performed distal pancreatectomy with splenectomy. Microscopic examination showed that the tumor was in fact a benign schwannoma. Histology showed a proliferation of spindle-shaped cell in a vague fascicular and haphazard pattern, with palisading arrangement.CONCLUSIONSchwannoma of the pancreas is very rare, however, clinicians should consider schwannoma as the differential diagnosis for pancreatic tumors. 相似文献