首页 | 本学科首页   官方微博 | 高级检索  
文章检索
  按 检索   检索词:      
出版年份:   被引次数:   他引次数: 提示:输入*表示无穷大
  收费全文   220篇
  免费   12篇
  国内免费   14篇
儿科学   9篇
基础医学   47篇
临床医学   25篇
内科学   33篇
神经病学   1篇
特种医学   16篇
外国民族医学   1篇
外科学   39篇
综合类   38篇
预防医学   5篇
药学   12篇
中国医学   10篇
肿瘤学   10篇
  2023年   3篇
  2022年   4篇
  2021年   3篇
  2020年   5篇
  2019年   4篇
  2018年   3篇
  2017年   8篇
  2016年   4篇
  2015年   4篇
  2014年   9篇
  2013年   9篇
  2012年   4篇
  2011年   8篇
  2010年   10篇
  2009年   10篇
  2008年   10篇
  2007年   16篇
  2006年   19篇
  2005年   17篇
  2004年   8篇
  2003年   13篇
  2002年   6篇
  2001年   2篇
  2000年   11篇
  1999年   7篇
  1998年   8篇
  1997年   3篇
  1996年   5篇
  1995年   2篇
  1994年   3篇
  1993年   2篇
  1992年   3篇
  1991年   1篇
  1990年   1篇
  1989年   4篇
  1988年   2篇
  1987年   1篇
  1984年   3篇
  1983年   1篇
  1982年   3篇
  1981年   1篇
  1980年   2篇
  1979年   1篇
  1978年   1篇
  1976年   2篇
排序方式: 共有246条查询结果,搜索用时 15 毫秒
1.
Although the foundations and evolution of Chinese medicine and Western medicine are very different, an increasing amount of research has revealed that those Eastern medicine principles practiced over thousands of years are con?rmed by new technologies applied to the basic science of the human body.Recent scienti?c discoveries present enticing opportunities to reconcile Chinese medicine theories with Western biomedicine. Is there a trend toward the convergence of Eastern and Western medicine? Four studies which exemplify the potential for convergence are described in this article. The studies present findings in regard to mesentery, interstitium, a gut-lung axis, and lung-centered hematopoiesis, and were published recently in leading journals such as Science, Nature, and Lancet.  相似文献   
2.
目的探讨结腹腔镜肠癌全结肠系膜切除术(complete mesocolic excision,CME)与开腹手术对结肠癌(colon cancer,CC)患者的临床疗效和预后的影响。方法选取2016年8月至2019年8月我院普外科收治的84例CC患者,按照手术方式的不同分为腹腔镜组和开腹组。比较两组患者术中手术时间、出血量、淋巴结清扫数量等指标,术后通气时间、住院时间和并发症发生率等指标,长期随访局部复发率、远处转移率、无瘤生存率以及生存质量FACT-G评分。结果腹腔镜组患者术中出血量、术后通气时间、住院时间以及并发症发生率显著低于开腹组,手术时间长于开腹组,各阶段生存质量评分明显优于对照组(P<0.05);两组间淋巴结清扫数量、远处转移率、局部复发率及无瘤生存率等差异无统计学意义(P>0.05)。结论结肠癌腹腔镜CME较开放手术具有明显优势,患者预后良好,近期疗效满意,值得推广。  相似文献   
3.
Fibroblast infiltration and collagen deposition result in structural changes in the bowel wall, and lead to strictures in intestinal inflammatory disease. While strictures can also occur in other contexts, such as malignancy, this review focuses on the surgical treatment of stricture secondary to inflammatory bowel disease. Distinguishing between predominantly inflammation vs established fibrosis as the cause of a stricture can be challenging. While inflammatory strictures may be responsive to medication, predominantly fibrotic strictures usually need surgical intervention. Both endoluminal and extraluminal approaches are described in this review. Endoscopic dilatation of strictures is suitable for short‐segment isolated small bowel strictures. Other options are to divide the stricture surgically but preserve the length, performing a strictureplasty or resecting the strictured segment. The mesentery is increasingly recognized as playing a role in stricture recurrence. In a relapsing‐remitting disease such as Crohn's disease, the preservation of intestinal length is essential and balance is needed between this and a complete resection to reduce the risk of recurrence. Pre‐ and postoperative involvement of the multidisciplinary team is essential to improve outcomes in this challenging clinical scenario.  相似文献   
4.
目的:探讨肠系膜纤维瘤病(MF)的 CT 表现及价值。方法回顾性分析6例经手术病理证实的 MF 的 CT 表现,分析病灶数量、大小、密度、强化程度和方式及其与周围组织的关系。结果6例 MF 均表现为单发肿块(100%);6例病灶长径为2.0~8.5 cm,平均6.5 cm;CT 平扫示5例呈等密度(83.3%)、1例呈混杂密度(16.7%);CT 增强扫描示5例呈轻度强化(83.3%),1例呈中度强化(16.7%),4例呈不均匀强化(66.7%);病灶浸润周围组织4例(66.7%),周围肠管受压推移2例(33.3%);肠系膜血管包绕病灶5例(83.3%)。结论MF 的 CT 表现有一定的特点,尤其是肠系膜血管包绕病灶较具特征性,CT 增强扫描能够为 MF的诊断提供重要的信息。  相似文献   
5.
6.
??Pediatric mesenteric lymph node enlargement is one of the most common causes of pediatric abdominal pain. The diagnostic criteria for most current report is??the longitudinal diameter > 0.5 cm??vertical and horizontal diameter ratio ??L/T?? more than 2??more than two of lymph nodes changed diffusely and uniformly. Ultrasound can not only diagnose lymph node enlargement timely and accuratly but also evaluate the morphology and blood flow of lymph node??helping us to determine whether there’s a mesenteric lymph node enlargement pathologically and provide the basis for clinical diagnosis and treatment.  相似文献   
7.
Cystic cavitation of the lymph nodes associated with hyposplenism is a rare and under‐recognised complication of coeliac disease. This report encompasses the clinical, radiological and pathological features of this condition, while demonstrating the pivotal role radiological imaging plays in achieving a clinical diagnosis.  相似文献   
8.
目的:探讨肠系膜淋巴管瘤的临床表现、影像学特点及病理学特征。方法收集14例肠系膜淋巴管瘤患者的临床资料,回顾性分析其临床病理特征及影像学表现。结果14例肠系膜淋巴管瘤临床症状多样化,以腹部胀痛不适多见。术前影像学检查:2例CT示淋巴管瘤,5例仅提示囊性占位,2例诊断为其他肿瘤,3例肠梗阻或肠扭转或肠套叠,2例未见明显病变。病变主体多位于肠系膜并累及肠壁,镜下呈多房囊腔,内衬单层扁平细胞,管腔内可见淋巴液及淋巴细胞。免疫组化标记瘤细胞均表达D2-40。结论肠系膜淋巴管瘤属良性肿瘤,应警惕并发症,术前影像学检查可提示诊断,明确诊断依赖病理学检查。  相似文献   
9.
Lymphangioma of the mesocolon is very rare. We report two cases of surgically resected and histologically proven mesocolic lymphangioma in adults. In both cases, ultrasound revealed a large cystic mass with multiple thin septa in the lower abdomen. A peculiar finding was the large craniocaudal sliding movement of the mass synchronized with the patient's respiration, which was a clue to the diagnosis of mesenteric lymphangioma. © 2017 Wiley Periodicals, Inc. J Clin Ultrasound 46 :78–81, 2018;  相似文献   
10.
Extraskeletal osteosarcoma is a rare and invasive malignancy, typically located in the soft tissue without attachment to the skeleton. The present study reports a case of a primary mesenteric extraskeletal osteosarcoma of a 71-year-old woman. The patient complained of an incomplete defecation. Colonoscopy showed an ulcer with impression of external compression of the sigmoid. An additional abdominal computed tomography (CT) scan revealed a large, almost completely calcified, mass in the left lower abdomen causing hydronephrosis of the left kidney. The patient underwent surgery and the mass was resected completely. The histopathological diagnosis was a primary abdominal extraskeletal osteosarcoma arising from the mesocolon with local invasion of the sigmoid. She was in follow-up without adjuvant chemo- or radiotherapy. Five months after initial surgery the tumor recurred with widespread peritoneal metastasis.  相似文献   
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号