نتایج جستجو برای: local invasion
تعداد نتایج: 600648 فیلتر نتایج به سال:
We investigate the spread of an exotic herb, Hieracium lepidulum, into a New Zealand Nothofagus forest with the aim of understanding how stand-development of tree populations, propagule pressure and invader persistence, affect invasion across the landscape and within communities. Using data repeatedly collected over 35 years, from 250 locations, we parametrize continuous-time Markov chain model...
Mohammad Hasan Khan ruled over Shaki at the same time as the rivalry between the Ottoman and Russian governments in the Caucasus region. In those days, the Ottomans established political relationships with local heads such as the ruler of Shaki with the aim of countering the influence and domination of the Russians in the Caucasus. Mohammad Hasan Khan had been also inclined to the Ottomans due ...
background and objectives: retinoblastoma is the most common intraocular pediatric malignancy. angiogenic factor expression such as vegf (vascular endothelial growth factor) in retinoblastoma can be confirmatory angiogenic potential of this tumor. this study was performed to determine the role of angiogenesis in local invasion of retinoblastoma and its correlation with patients’ survival. mater...
Background and purpose: Squamous Cell Carcinoma (SCC) is the most common head and neck malignancy. To decrease the side effects of treatment and the rate of mortality, careful staging for proper treatment plan is necessary. The purpose of this prospective study was to compare the diagnostic value of two different imaging methods (Computed Tomography (CT) and Magnetic Resonance Imaging (MRI)...
A multi-institutional study was undertaken to determine whether mandibular canal (MC) invasion and mandibular medullary bone invasion are independent factors in lower gingival squamous cell carcinoma (SCC). A total of 345 patients with lower gingival SCC were retrospectively reviewed. Mandibular bone invasion was categorized into three types; no bone invasion; invasion through cortical bone (me...
OBJECTIVE To detect the clinicopathological factors associated with lymph node metastases in early gastric cancer. METHODS We retrospectively evaluated the distribution of metastatic nodes in 198 patients with early gastric cancer treated in our hospital between May 2008 and January 2015, the clinicopathological factors including age, gender, tumor location, tumor size, macroscopic type, dept...
Accurate diagnosis of local invasion of hilar cholangiocarcinomas is challenging due to their small size and the anatomic complexity of the hepatic hilar region. On the other hand, the correct diagnosis of local invasion is essential for assuring the possibility of curative surgery. The purpose of this study was to evaluate the feasibility of four-channel multidetector-row computed tomography (...
BACKGROUND Since Oberndorfer proposed the term "carcinoid" in 1907, over 100 years have passed. This attractive term was initially proposed for 6 cases of his own experience with 12 submucosal lesions in the small intestine.Oberndorfer summarized the characteristic features of these lesions as follows: (1) small in size and often multiple, (2) histologically undifferentiated with a suggestion o...
Follicular thyroid carcinoma (FTC) tends to metastasize to remote organs rather than local lymph nodes. Separation of FTC from follicular thyroid adenoma (FTA) relies on detection of vascular and/or capsular invasion. We investigated which vascular markers, CD31, CD34 and D2-40 (lymphatic vessel marker), can best evaluate vascular invasion and why FTC tends to metastasize via blood stream to re...
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