نتایج جستجو برای: lung tumor
تعداد نتایج: 696660 فیلتر نتایج به سال:
Background: the aim of this study was to investigate the prognostic value of 18Fluorine-fluorodeoxyglucose positron emission tomography/computed tomography (18F-FDG PET/CT) parameters in both overall survival and progression-free survival in Stage I-III non-small cell lung cancer (NSCLC). Materials and Methods: In this retrospective study, 267 patients who were diagnosed as Stage I-III non-smal...
Malignancy is observed in 5-10% of MN in adults , with the risk being highest in patients over the age of 60. A Solid tumor (such as carcinoma of the lung or colon) is most often involved. It is presumed that tumor antigens are deposited in the glomeruli : this is followed by antibody deposition and complement activation , leading to epithelial cell and basement membran...
PURPOSE For lung cancer patients with poor pulmonary function because of emphysema or fibrosis, it is important to predict the amplitude of internal tumor motion to minimize the irradiation of the functioning lung tissue before undergoing stereotactic body radiotherapy. METHODS AND MATERIALS Two board-certified diagnostic radiologists independently assessed the degree of pulmonary emphysema a...
We hypothesized that resistance of lung tumors to the cytotoxic effects of xenobiotics is associated with loss of cytochrome P-450 expression, leading to defective formation of reactive intermediates. To test this hypothesis, we investigated 1,1-dichloroethylene (DCE), a chemical that causes Clara cell damage, in a urethane-induced model of lung tumorigenesis. Lung metabolism of DCE yields 2-S-...
Liposomes containing polyethylene glycol-derivatized phospholipids are able to evade the reticuloendothelial system and thereby remain in circulation for prolonged periods. We report here that doxorubicin encapsulated in these sterically stabilized liposomes (S-DOX) suppresses the growth of established human lung tumor xenografts in severe combined immunodeficient (SCID) mice and inhibits the s...
TOPIC: Lung Pathology TYPE: Medical Student/Resident Case Reports INTRODUCTION: Typical carcinoid is a rare neuroendocrine tumor (NET); they represent 1 to 2% of all lung malignancies in adults. NETs are more common than atypical carcinoid, characterized by low mitotic rate. Risk factors remain unclear; most cases sporadic. We present the case an asymptomatic woman diagnosed with typical tumor....
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...
Background: Inflammatory myofibroblastic tumor (IMT) is a tumor composed of myofibroblasts and a mixed inflammatory infiltrate that rarely undergoes malignant transformation. The most common sites of involvement include the lung, liver and orbit, but it has been reported to occur in nearly every site of the body, including oral cavity and soft tissue. Although common in other sites, such a tumo...
The immune system plays an important role in regulating tumor growth and metastasis. Classical monocytes promote tumorigenesis and cancer metastasis, but how nonclassical "patrolling" monocytes (PMo) interact with tumors is unknown. Here we show that PMo are enriched in the microvasculature of the lung and reduce tumor metastasis to lung in multiple mouse metastatic tumor models. Nr4a1-deficien...
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