http://triscience.com A tumor is used to refer to a neoplasm, which is a “solid or fluid-filled cystic lesion that may or may not be formed by an abnormal growth of neoplastic cells.” Tumors often appear enlarged in sized. However, in spite of popular knowledge and belief, a tumor is not completely synonymous with cancer. A cancer is almost always malignant, while a tumor can be benign or pre-malignant. It can also represent a lesion that will not develop into a cancerous affliction in the future. The words “mass” and “nodule” can be considered as synonyms for “tumor,” but tumor itself is often used rather generically, without giving reference or an idea to how big the physical size of the lesion is. In the strict medical sense, the term nodule is used when the size of the tumor is less than twenty millimeters in its greatest dimension, and “mass” is used when the lesion is at least twenty millimeters in its greatest dimension. “Tumor” is the Latin word for “swelling,” and in the basic medical sense it used to mean an abnormal swelling of the flesh. Contemporary usage, however, has associated it with cancerous or non-cancerous neoplasm. Cysts can also be considered tumors, even if they do not contain neoplastic cells. A neoplasmic tumor is often caused by an abnormal proliferation of tissues, which can be a direct result of genetic mutations. However, not all neoplasms cause a visible tumor, such in the case of carcinoma in situ or leukemia. Cysts are not associated with an abnormal proliferation of tissues, and they are not potentially malignant. Breast cysts can be considered as tumors, but instead of neoplasm the growth is caused by encapsulated glandular swellings from the thyroid, adrenal gland, and pancreas. Keloids, granulomas, and encapsulated hematomas and necrotic tissues can also be considered as tumors. This category contains scientific information about tumors, which are cell growths that might or might not lead to cancerous conditions. daily 1 2012-06-18T07:39:14Z http://triscience.com/Cells/Tumor/sequential-heat-gelatinization-and-enzymatic-hydrolysis-of-corn-starch-in-an-extrusion-reactor-optimization-for-a-maximum-dextrose-equivalent Gelatinization of corn starch was first carried out on two extruder sections (500 mm), without enzyme and at various water contents, to select barrel temperatures and screw speeds leading to samples o... No publisher admin 19 amylase bernfeld corn enzyme extrudates extruder feed gelatinization gelatinized hplc hydrolysis multifactorial novo oligosaccharide residual siginficantly solubility somogyi starch starchh 2013-05-19T04:14:40Z Doculite http://triscience.com/Cells/Tumor/sequential-dna-flow-cytometry-in-metastatic-malignant-melanoma Sequential flow cytometry was performed on 73 metastatic malignant melanomas, derived from 804 primary tumors. Tumor thickness was confirmed an excellent prognostic parameter in primary melanoma, but ... No publisher admin aneuploidy cell cytometry disease dying genetic metastatic patients prognostic tumor tumors 2013-05-19T04:14:39Z Doculite http://triscience.com/Cells/Tumor/separation-of-toluene-trichlorotrinitrobenzene-mixture-with-carbon-dioxide-at-elevated-pressures A flow apparatus was used to study the separation of toluene from a liquid mixture containing mainly toluene and Tctnb (trichlorotrinitrobenzene)with Co2 at elevated pressures. Experimental results in... No publisher admin 19 extraction interphase packings resistances solubility tctnb temperature trichlorotrinitrobenze 2013-05-19T04:14:17Z Doculite http://triscience.com/Cells/Tumor/separation-of-malignant-cells-using-leukocyte-removal-filter-in-combination-with-a-cell-saver Definite suspensions of malignant cells from three human tumor cells lines (bladder, prostate and renal cell carcinome) were passed through a cell saver (Althin Mediplast) and a leucocyte removal filt... No publisher admin althin autotransfusion carcinome cell cells human intraoperative leucocyte mediplast prostate solutions surgery tumor urological 2013-05-19T04:14:13Z Doculite http://triscience.com/Cells/Tumor/separation-of-cholesterol-and-fatty-acylglycerols-acids-and-amides-by-thin-layer-chromatography A rapid unidimensional thin-layer chromatographic (Tlc) method for the separation of neutral lipids is described, using two sequential solvent systems of different polarity. Excellent separations of m... No publisher admin 19 chromatographic lipids solvent unidimensional 2013-05-19T04:14:10Z Doculite http://triscience.com/Cells/Tumor/sensitization-of-human-melanoma-cells-to-the-cytotoxic-effect-of-melphalan-by-the-glutathione-transferase-inhibitor-ethacrynic-acid Glutathione transferases are enzymes implied in the resistance of tumor cells to bifunctional alkylating cytostatic drugs. We have investigated the effect of the glutathione transferase inhibitor etha... No publisher admin acid adducts alkylating bifunctional cell cells chloro concentration cytostatic cytotoxic cytotoxicity dinitrobenzene drug drugs enzymes ethacrynic glutathione human inhibitor interstrand 2013-05-19T04:13:56Z Doculite http://triscience.com/Cells/Tumor/sensitivity-of-urinary-quantitative-immunocytology-with-monoclonal-antibody-486-p3-12-in-241-unselected-patients-with-bladder-carcinoma We investigated the sensitivity of quantitative immunocytology with our monoclonal antibody 486 P3/12 in 241 unselected patients with transitional cell carcinoma. Immunocytology yielded a sensitivity ... No publisher admin acid antibody carcinoma cell cytology cytometry deoxyribonucleic immunocytology patients transitional tumors 2013-05-19T04:13:53Z Doculite http://triscience.com/Cells/Tumor/sensitivity-of-helium-beam-modulator-design-to-uncertainties-in-biological-data The goal in designing beam-modulating devices for heavy charged-particle therapy is to achieve uniform biological effects across the spread-peak region of the beam. To accomplish this, the linear-quad... No publisher admin biological bragg cell cells helium kevmu mevu nonuniformity radiation therapy tumor 2013-05-19T04:13:52Z Doculite http://triscience.com/Cells/Tumor/sensitivity-and-resistance-in-human-metastatic-melanoma-to-the-new-chloroethylnitrosourea-anti-tumor-drug-fotemustine Fotemustine is a novel chloroethylnitrosourea derivative currently used in Phase Iii clinical trials for disseminated metastatic melanoma. This drug has been shown to inhibit enzymes in the ribonucleo... No publisher admin amelanotic cell cells chloroethyl chloroethylnitrosourea clinical clinically clones drug dtnb electron enzyme enzymes fotemustine fplc glutathione human inhibitor isotope label 2013-05-19T04:13:48Z Doculite http://triscience.com/Cells/Tumor/sensitive-immunocytochemical-method-for-identification-of-estrogen-receptor-positive-subpopulations-of-breast-cancer-cells A modification of a conventional immunocytochemical assay for demonstration of estrogen receptors (Er-Ica) in breast cancer tissue sections resulted in a sensitive quantiative assay for identification... No publisher admin biochemical cells quicera subpopulations tumors 2013-05-19T04:13:46Z Doculite http://triscience.com/Cells/Tumor/senescent-cells-fail-to-express-cdc2-cyca-and-cycb-in-response-to-mitogen-stimulation Senescent human diploid fibroblasts (Hdf) contain no detectable cdc2 mRNA or p34cdc2 protein. Similarly, young quiescent Hdf have only low levels of cdc2 mRNA and protein. After serum stimulation, qui... No publisher admin antigen cells cofactors cyca cycb cyclins deficiences eukaryotes expression genes homologues kinase microinjection mitosis molecules mrna nuclear protein senescent serum 2013-05-19T04:13:43Z Doculite http://triscience.com/Cells/Tumor/semidifferentiated-squamous-cell-carcinoma-mimicking-epithelioma-cuniculatum-observation-of-two-cases Two 62 and 76 year old men with lesions in the plantar surface of the foot, with clinical and history of epithelioma cuniculatum are presented. Although both had long duration, the deep incisional bio... No publisher admin adenoid biopsy carcinoma cell clinical cuniculatum epithelioma incisional lesions pathological plantar radiation requisited semidifferentiated squamous tumor verrucous 2013-05-19T04:13:40Z Doculite http://triscience.com/Cells/Tumor/selenium-status-in-relation-to-reduced-glutathione-peroxidase-activity-in-aspirin-sensitive-asthma Selenium status and its relationship to lowered platelet glutathione peroxidase activity was investigated in 18 subjects with aspirin (Asa)-induced asthma and in asthmatic and non-asthmatic Asa-tolera... No publisher admin 19 concentration enzyme genetic glutathione mugl muml peroxidase product selenium serum syndrome 2013-05-19T04:13:26Z Doculite http://triscience.com/Cells/Tumor/selectivity-of-retrogasserian-glycerol-rhizotomy-in-the-treatment-of-trigeminal-neuralgia The possibility of obtaining a selective effect on different trigeminal branches by glycerol rhizotomy was studied in the treatment of trigeminal neuralgia. Transcutaneous electrical stimulation was u... No publisher admin 19 2013-05-19T04:13:23Z Doculite http://triscience.com/Cells/Tumor/selective-venous-catheterization-in-the-evaluation-of-hyperandrogenism Retrograde bilateral ovarian-adrenal vein catheterization was carried out in 16 patients with plasma testosterone levels exceeding 1.4 ng/ml (4.85 nmol/l). While pelvic ultrasonography and computerize... No publisher admin androgen catheterization cell diagnosis hilus histopathologically hyperandrogeny hyperplasia menopausal ngml nmoll nontumoral ovarian ovary patients plasma polycystic premenopausal producing stromal 2013-05-19T04:13:21Z Doculite