排序方式: 共有35条查询结果,搜索用时 31 毫秒
1.
Deepali Jain MD DNB Subimal Roy MD PhD Sunita Bhalla MD Veer Singh Mehta MS Mch 《Brain pathology (Zurich, Switzerland)》2013,23(1):109-112
Medulloblastoma accounts for only 1% of all adult CNS tumors. Recently, we have encountered a case of medulloblastoma in a 26 year old man with divergent differentiation including myoblastic, glial, osteoblastic and chondroblastic differentiation. Here we present the results of immunohistochemical staining using several specific antibodies with a discussion and a review of literature. 相似文献
2.
3.
4.
5.
6.
7.
Longer‐term outcome of perventricular device closure of muscular ventricular septal defects in children
下载免费PDF全文
![点击此处可从《Catheterization and cardiovascular interventions》网站下载免费的PDF全文](/ch/ext_images/free.gif)
8.
Chandrakanth Are MD FRCS FACS Shireen Rajaram PhD Madhuri Are MD FAAPMR FAAPM Hemanth Raj MBBS MS Mch Benjamin O. Anderson MD FACS Ramesh Chaluvarya Swamy PhD Manavalan Vijayakumar MBBS DNB Mch FRCS Tianqiang Song MD PhD Manoj Pandey MBBS MS Mch James A. Edney MD FACS Eduardo L. Cazap MD PhD 《Journal of surgical oncology》2013,107(2):221-226
Cancer is one of the leading causes of death worldwide. The global cancer burden (GCB) is expected to rise significantly and will disproportionately affect the less developed world (LDW). The aim of this review is to analyze the trends in GCB and describe the types, estimates, and causes of new cancer cases. The challenges and strategies associated with tackling this rising GCB are described in which surgeons can play a vital role. J. Surg. Oncol. 2013;107:221–226. © 2012 Wiley Periodicals, Inc. 相似文献
9.
Kannath Santhosh MD Bejoy Thomas MD Vishnupuri V. Radhakrishnan MD Jitender Saini MD Chandrasekharan Kesavadas MD Arun Kumar Gupta MD Tirur Raman Kapilamoorthy MD Suresh N. Nair Mch 《Journal of magnetic resonance imaging : JMRI》2009,29(4):967-970
Purpose
To explore the utility of diffusion tensor imaging (DTI) and diffusion tensor metrics (DTM) in characterizing the structural pathology of epidermoid cysts. DTI gives information about the tissue structure; a high fractional anisotropy (FA) indicates a highly structured orientation of the tissue, fibers, or white matter tracts. Based on the tensor rank, a set of three metrics has been described that can be used to measure the directional dependence of diffusion: linear anisotropy (CL), planar anisotropy (CP), and spherical anisotropy (CS). DTM takes into account the shape of diffusion anisotropy and hence may provide better insight into the orientation of structures than FA.Materials and Methods
DTI was performed in three patients with epidermoid cysts. FA, directionally‐averaged mean diffusivity (Dav), exponential apparent diffusion coefficient (eADC), and DTM, such as CL, CP, and CS, were measured from the tumor core as well as from the normal‐appearing white matter. Histopathological correlation was obtained.Results
Epidermoid cysts showed high FA with Dav values similar to that of normal white matter. eADC maps did not show any restriction of diffusion. FA values were high, but not as high as that for the white matter. CP values were higher and CL values were lower than those obtained for the white matter in various regions.Conclusion
High CP values suggest preferential diffusion of water molecules along a two‐dimensional geometry, which could be attributed to the well‐structured orientation of keratin filaments and flakes within the tumor as demonstrated by histopathology. Advanced imaging modalities like DTI with DTM can provide information regarding the microstructural anatomy of the epidermoid cysts. J. Magn. Reson. Imaging 2009;29:967–970. © 2009 Wiley‐Liss, Inc. 相似文献10.