نتایج جستجو برای: malignant mesenchymal tumors
تعداد نتایج: 398053 فیلتر نتایج به سال:
background and aims. salivary gland tumors are rare and specific lesions. there are differences in the incidence and frequency of salivary tumors in both minor and major salivary glands in different countries. this study was carried out to determine the prevalence of major and minor salivary gland tumors in ahvaz in the south of iran. materials and methods. all the cases, recorded in imam khome...
Gastrointestinal stromal tumors (GISTs) are the most common mesenchymal tumors of the gastrointestinal (GI) tract. Most of the cases are located in the stomach followed by the small intestine. They arise from the interstitial cells of cajal, which are loc Malignant GISTs are rare type of tumors in GIT. Small intestine GIST is more likely to be malignant compared to stomach. Here we reported suc...
The invasion and spread of cancer cells are two the most notable characteristics malignant tumors. Recent studies suggest that epithelial-mesenchymal transition (EMT) has been linked to this significant occurrence. It is absence epithelial brow presence mesenchymal facial hair. aims present study were explore immunohistochemical staining vimentin E-cadherin ex vivo as EMT markers assess their p...
BACKGROUND Because of the recent reclassification of mesenchymal tumors, which was based on a better understanding of the genetics and immunophenotype of gastrointestinal stromal tumors (GISTs), only a limited number of studies have described the radiologic appearance of GISTs. METHODS This study reviews the imaging characteristics of GISTs, with an emphasis on differentiating benign and mali...
background: gastrointestinal stromal tumors (gists) constitute the majority of gastrointestinal mesenchymal tumors. they usually express a proto-oncogen protein called cd117 detected by immunohistochemistry. this study investigated the differentiation of gists as well as the risk of aggressive behaviors in gists from surgically-treated patients in university affiliated hospitals. methods: the...
Gastrointestinal stromal tumors (GIST) are defined as mesenchymal of the gastrointestinal tract expressing proto-oncogene protein CD 117. GIST is a rare tumor small bowel, which can be difficult to diagnose and has varied clinical outcome. Prognosis dependent on size mitotic count. Radical surgical excision (R0) treatment choice for resectable non-metastatic disease. Imatinib first-line therapy...
It is known that epithelial mesenchymal transition (EMT) contributes to the acquisition of malignant property in human cancers. However, the role of EMT in canine tumors remains to be elucidated. To evaluate the correlation between expression levels of protein markers involved in EMT and clinicopathological characteristics in canine mammary gland tumors, immunohistochemistry using antibodies ag...
The diverse malignant, stromal, and immune cells in tumors affect growth, metastasis, and response to therapy. We profiled transcriptomes of ∼6,000 single cells from 18 head and neck squamous cell carcinoma (HNSCC) patients, including five matched pairs of primary tumors and lymph node metastases. Stromal and immune cells had consistent expression programs across patients. Conversely, malignant...
•Perivascular epithelioid cell tumors (PEComas) are a family of rare, poorly defined mesenchymal tumors of uncertain malignant potential.•Treatment for PEComas has most commonly involved excisional biopsy or surgical resection.•The use of mTOR inhibitors may provide the best medical treatment as well as a fertility-sparing treatment option.
Intracranial solitary fibrous tumors (ISFTs) are rare mesenchymal neoplasms originating in the meninges and constitute a heterogeneous group of rare spindle cell tumors that include benign and malignant neoplasms of which hemangiopericytoma is nowadays considered a cellular phenotypic variant. ISFT usually shows benign or indolent clinical behavior. We describe two cases of ISFT managed in our ...
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