Search results for "Malignant"

Does Exist A Correlation Between BMI and Gleason Patterns 4 and 5 At Prostate Biopsy?

2013

Background: Obesity has been related with higher Gleason grade and worse prognosis. Increasing proportion of Gleason pattern 4 or 5 is a critical factor for biochemical recurrence, progression and mortality. The endocrine activity of visceral fat could be responsible of the differentation of the prostatic malignant cell towards a more aggressive fenotype. The aim of our study was to correlate Body Mass Index with the presence of Gleason pattern 4 or higher at biopsy. Materials and Methods: Consecutive patients with positive prostate biopsy were included. A transrectal prostate biopsy procedure with 12 cores, was performed. All tissue samples were reviewed. Results: Out of 135 patients diagn…

Therapeutische Strategien bei malignen Weichteiltumoren

2001

Einleitung: Ziel einer Weichteiltumor-Registerstudie der Chirurgischen Arbeitsgemeinschaft Onkologie (CAO) der Deutschen Gesellschaft fur Chirurgie war die Erfassung der Behandlungsstrategien bei malignen Weichteiltumoren des Erwachsenen. Methodik: In 19 Monaten wurden Daten von 292 Patienten von 99 chirurgischen Kliniken Deutschlands nach einem speziell entwickelten Dokumentationsbogen prospektiv zur pratherapeutischen Biopsie, Vorbehandlung, definitiven chirurgischen Therapie, zu multimodalen Masnahmen und zum pathohistologischen Befund erhoben. Ergebnisse: 39 % der Tumoren wurden in Universitatskliniken, 36 % in Schwerpunktkrankenhausern und 24 % in Krankenhausern der Grundversorgung beh…

Revue : Possibilités des nouvelles techniques endoscopiques : coloration vitale et endomicroscopie confocalein vivo dans la détection des lésions pré…

2004

L’enjeu de la surveillance endoscopique des patients souffrant de colite ulcereuse de longue duree est le diagnostic precoce des lesions malignes et des modifications precancereuses de la muqueuse.

L’obésité : un état précancéreux digestif ignoré

2010

Doctoral: A smartphone-based decision support tool for the early detection of oral potentially malignant disorders

2023

Oral potentially malignant disorders can be defined as mucosal lesions and conditions with an increased risk of malignant transformation. Oral potentially malignant disorders are a significant health burden, and they are often diagnosed late due to scant attention to routine dental practice and the low number of specialized oral medicine centres. This report summarizes the DoctOral experience, a research initiative, providing a free smartphone-based decision support tool for the general medical/dental practitioner; the tool is based on the clinical appearance of oral lesions. Captured, oral pictures can be immediately examined via interactive decision trees and constructed on the smartphon…

Oral cancer awareness in North-Western Spain: a population-based study

2020

Background An early diagnosis depends greatly on patient awareness. Thus, the aim of this study was to investigate general awareness of oral cancer and knowledge about its risk factors, signs and symptoms. Material and Methods Cross-sectional population-based survey of randomly selected respondents conducted from March 1, 2015 to 30 June 2016. Results A total of 5,727 people entered the survey (response rate: 53%). When asked what cancers participants had heard about, 20.3% mentioned oral cancer. Regarding risk factors, tobacco was mentioned by 55.3% of the sample (n=3,169), followed by alcohol (12.5%; n=708), poor oral hygiene (10.8%; n=618), diet (6.5%; n=377), and genetics (4.5%; n=248).…

Endotheliotropic (hemolytic) nephroangiopathy and its various manifestation forms (thrombotic microangiopathy, primary malignant nephrosclerosis, hem…

1980

In hemolytic-uremic syndrome (HUS) various lesion types in the kidneys are observed in childhood. These are designated as the “glomerular type=G type” (essentially identical with thrombotic microangiopathy), as “arterial type=A type” (essentially identical with primary malignant nephrosclerosis (PMN)) or as “mixed type=G/A type”. With reference to characteristic cases, the most important morphological findings are described. In adults, in whom other diagnostic terms are used besides HUS, the same nephropathological types are observed. In the two phases of life, there occurs in addition renal cortical necrosis in subtotal nephroangiothrombosis. The G type and A type also have a different cli…

MYC Activates Stem-like Cell Potential in Hepatocarcinoma by a p53-Dependent Mechanism

2014

Activation of c-MYC is an oncogenic hallmark of many cancers including liver cancer, and is associated with a variety of adverse prognostic characteristics. Despite a causative role during malignant transformation and progression in hepatocarcinogenesis, consequences of c-MYC activation for the biology of hepatic cancer stem cells (CSCs) are undefined. Here, distinct levels of c-MYC over-expression were established by using two dose-dependent tetracycline inducible systems in 4 hepatoma cell lines with different p53 mutational status. The CSCs were evaluated using side-population approach as well as standard in vitro and in vivo assays. Functional repression of p53 was achieved by lentivira…

Estrogen-Induced Mutations and Its Role in the Development of Tumorigenesis

2006

Using RAPD-PCR fingerprinting, the detection of mutations induced by estrogen (E) exposure was studied in nonmalignant- and malignant cells. Cells exposed to 17α-and 17β-estradiol, diethylstilbestrol, bisphenol A, and α-zearalanol induced mutations in different regions of the genome. They consisted of insertion/deletion as a result of point or length mutations and quantitative changes as a result of hypoploidy or polyploidy. We also detected several mutated loci in tumor-free tissues, adjacent to tumors, and DES-induced tumors. The data suggest that these mutations occurred in early stages of stilbene E-induced renal carcinogenesis, and that they may be induced as a result of stilbene E tre…

Nitric Oxide Promotes Resistance to Tumor Suppression by CTLs

2006

Abstract Many human tumors express inducible NO synthetase (NOS2), but the roles of NO in tumor development are not fully elucidated. An important step during tumor development is the acquisition of apoptosis resistance. We investigated the dose-dependent effects of endogenously produced NO on apoptosis using ecdysone-inducible NOS2 cell lines. Our results show that short-term NOS2 expression enhances CD95-mediated apoptosis and T cell cytotoxicity dose dependently. Furthermore, we could show that during chronic exposure to NO, besides the primary cytotoxic NO effect, there is selection of cell clones resistant to NO that show cross-resistance to CD95-induced apoptosis and the killing by CT…