نتایج جستجو برای: malignant tumor

تعداد نتایج: 563949  

Journal: :medical journal of islamic republic of iran 0
noushin jalayer naderi department of oral and maxillofacial pathology, faculty of dentistry, shahed university, tehran, iran.سازمان اصلی تایید شده: دانشگاه شاهد (shahed university) farrokh tirgari pathology department, institute cancer, tehran university of medical sciences, tehran, iran. [email protected] 3. dds, shahed university, tehran, iran.سازمان اصلی تایید شده: دانشگاه علوم پزشکی تهران (tehran university of medical sciences) zahra keshavarz shahed university, tehran, iran.سازمان اصلی تایید شده: دانشگاه شاهد (shahed university)

background: new blood vessels formation is a critical step in tumor progression. vascular density affects the clinical outcome and prognosis of malignant tumors. the aim of this study was to investigate the relation between the vascular endothelial growth factor (vegf) expression and vascular density with the clinical and histopathologic features in oral squamous cell carcinoma (oscc).   method...

Journal: :iranian biomedical journal 0
حسن وحیدنژاد hassan vahidnezhad لیلا یوسفیان leila youssefian محمود جدی تهرانی mahmoud jeddi-tehrani محمدمهدی آخوندی mohammad mehdi akhondi حجت اله ربانی hojatollah rabbani فاضل شکری fazel shokri مینا تبریزی

backgrounds: evidence is accumulating to support disruption of tissue architecture as a powerful event in tumor formation. for the past four decades, intensive cancer research with the premise of “cancer as a cell based-disease” focused on finding oncogenes or tumor suppressor genes. however, the role of the tissue architecture was neglected. three dimensional (3d) cell cultures which can recap...

H SAADATNIA, S SERESHKI, T GHIASI MOGHADAM,

156 Iranian patients with primary malignant tumors of the small intestine were reviewed. Malignant lymphoma was the most common tumor type, comprising 128 patients (82%), followed by adenocarcinoma (22 patients, 14.1 %), leiomyosarcoma (4 patients, 2.56%) and carcinoid tumor (2 patients, 1.28%). Lymphomas and adenocarcinomas were primarily located in the duodenum or jejunum, whereas leiomy...

Journal: :jundishapur journal of microbiology 0
fahem mohsin mahmood department of pathology, college of medicine, al-nahrain university, baghdad, iraq haider sabah kadhim department of pathology, college of medicine, al-nahrain university, baghdad, iraq; medical microbiology department, college of medicine, al-nahrain university, baghdad, iraq. tel: +96-47705336906 liqaa riadh mousa al khuzaee department obstetrics and gynecology, college of medicine, al-nahrain university, baghdad, iraq

conclusions hpv type 16 was detected in only 9.67% of malignant epithelial tumors. it appears that hpv infection plays a relatively minor role in the pathogenesis of ovarian carcinomas. results out of the eight cases with functional cysts only one case (12.5%) expressed hpv. no hpv expression was seen in cases with benign and borderline tumors. out of the 31 cases with one malignant surface epi...

Journal: :thrita 0
amirpasha ebrahimi department of surgery, hepatobiliary and liver transplantation division, imam-khomeini hospital, tehran university of medical sciences, tehran, ir iran afshin abdi rad department of surgical pathology, cancer institute, imam-khomeini hospital, tehran university of medical sciences, tehran, ir iran massoome najafi department of surgery, cancer institute, imam-khomeini hospital, tehran university of medical sciences, tehran, ir iran; department of surgical pathology, cancer institute, imam-khomeini hospital, tehran university of medical sciences, tehran, ir iran. tel/fax: +98-2166581657

introduction primary malignant esophageal melanoma makes up 0.1% to 0.2% of all esophageal malignancies. most physicians assume malignant melanoma as a skin originated neoplasm, however this type of melanoma can occur anywhere in the gastrointestinal tract especially in the esophagus. thus, it is essential to consider malignant melanoma in differential diagnosis of any esophagus masses. case pr...

ashraf, Mohammadjavad, Azarpira, Negar, Maghbol, Maryam,

Background & objective: Hemangiopericytoma is an uncommon vascular tumor derived from the pericytes of Zimmermann. . The most common location of the tumor is pelvic retroperitoneum and musculoskeletal system of the lower extremities. It is rarely seen in the head and neck area. In addition, only 0.8% to 3% of all orbital tumors and less than 5 % of primary sinonasal tumors are primary hemangiop...

Journal: :Journal of clinical images and medical case reports 2023

Spindle cell sarcoma (SCS) of the heart is a rare tumor which has malignant course, that could be primary or metastasis.

A Ebrahiminejad S Karamoozian

Meningioma is considered as a benign central nervous system tumor that accounts for approximately 18% of all brain tumors. About 5% of meningioma tumors are malignant and have more aggressive clinical signs and worse prognosis compared to benign tumors. Extracranial metastasis of meningioma is rare but in the case of occurrence, it is more prevalent in lung, liver and lymph nodes. Osseous metas...

Journal: :iranian journal of radiation research 0
j.i. saitoh department of radiation oncology, gunma university graduate school of medicine, 3-39-22, showa-machi, maebashi, gunma 371-8511, japan h. ishikawa department of radiation oncology, gunma university graduate school of medicine, 3-39-22, showa-machi, maebashi, gunma 371-8511, japan t. ebara department of radiation oncology, gunma university graduate school of medicine, 3-39-22, showa-machi, maebashi, gunma 371-8511, japan h. katoh department of radiation oncology, gunma university graduate school of medicine, 3-39-22, showa-machi, maebashi, gunma 371-8511, japan t. ohno department of radiation oncology, gunma university graduate school of medicine, 3-39-22, showa-machi, maebashi, gunma 371-8511, japan t. takahashi department of radiation oncology, gunma university graduate school of medicine, 3-39-22, showa-machi, maebashi, gunma 371-8511, japan

desmoplastic small round cell tumor is a rare malignant tumor that occurs primarily in young males. here, a case of small round cell tumor in an adult male successfully treated with a curative concurrent chemoradiotherapy is presented. a 58-year-old man had an intrapelvic tumor. surgical resection was attempted, but the tumor was unresectable. needle biopsy was performed and the diagnosis was s...

Journal: :acta medica iranica 0
ensani f karimi sh

undifferentiated nasopharyngeal corcinoma is frequently misdiagnosed as large cell malignant lymphoma. the aim of this study is to evaluate the diagnostic role of immunohistochemistry and electron microscopy in this tumor. 81 cases of nasopharyngeal carcinoma were studied. patients ranged from 9-90 years in age (mean: 48.5 years). the age incidence curve was bimodal with two peaks in 2-3 and 5-...

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