Search results for " Metastasis."
showing 10 items of 617 documents
Preoperative Radiochemotherapy and Radical Surgery of Advanced Head and Neck Cancers — Results of a Prospective, Multicenter DÖSAK Study
1994
Present research concerning the efficiacy of therapeutic strategies for squamous cell carcinomas of the oral cavity and the oropharynx profits from former observational studies. The so-called retrospective German, Austrian, and Swiss Association for Head and Neck Tumors (DOSAK) study (Platz et al. 1986) served to review existing proposals for classification (UICC 1973, 1978; AJC 1978) and to develop a statistical classification which enables the head and neck oncologist to define prognostically homogeneous patient collectives. The treatment-dependent prognostic index (TPI) was the corresponding result (Platz et al. 1982).
37 Quantitative evaluation of lymph-vascular space invasion (LVSI) in patients affected by endometrial cancer: prognostic and clinical implications
2020
Objectives Lymph-vascular space invasion (LVSI) is associated with an increased risk of recurrence. Usually, the interpretation of LVSI is just qualitative, as presence or absence. The aim of this study is to examine the quantitative analysis of LVSI. Methods Retrospective multicentre study. It included 2300 consecutive patients who received a histologically confirmed diagnosis of endometrial cancer between January 2000 and December 2018 at the Gynaecologic Oncology Unit of two tertiary hospitals in Italy. Results The rate of lymph node metastasis increased from the 5% in patients with no LVSI, to 15% in patients with focal LVSI and 33% in those with diffuse LVSI (p Conclusion The presence …
HIFU for Bone Metastases and other Musculoskeletal Applications
2018
AbstractHigh-intensity focused ultrasound (HIFU) is a totally noninvasive procedure that has shown promising results in the management of numerous malignant and nonmalignant conditions. Under magnetic resonance or ultrasound guidance, high-intensity ultrasound waves are focused on a small, well-defined target region, inducing biologic tissue heating and coagulative necrosis, thus resulting in a precise and localized ablation. This treatment has shown both great safety and efficacy profiles, and may offer a multimodal approach to different diseases, providing pain palliation, potential local tumor control, and, in some cases, remineralization of trabecular bone. In musculoskeletal field, HIF…
Effects of E-64 (cysteine-proteinase inhibitor) and pepstatin (aspartyl-proteinase inhibitor) on metastasis formation in mice with mammary and ovaria…
1994
The effects of E-64 (Cathepsin B and L inhibitor) and Pepstatin A (Cathepsin D inhibitor) on spontaneous and experimental metastasis formation were investigated in mice with MCa mammary carcinoma, M5076 ovarian sarcoma and L1210 leukemia. Pepstatin induced a marked decrease in the number of spontaneous metastasis in MCa or M5076 tumor bearing mice. This phenomenon was also noted with E-64 but only in M5076 tumor bearing mice. On the other hand, both these agents were unable to prevent the formation of experimental metastasis in mice injected i.v. with L1210, MCa or M5076 tumor cells or with tumor cells in which Cathepsin B, L and D activities were inhibited by a 24 hour continuous exposure …
Surveillance of spontaneous breast cancer metastasis by TRAIL-expressing CD34⁺ cells in a xenograft model
2012
Tumor necrosis factor-related apoptosis-inducing ligand (TRAIL), delivered as a membrane-bound molecule expressed on the surface of adenovirus-transduced CD34+ cells (CD34-TRAIL+), was analyzed for its apoptotic activity in vitro on 12 breast cancer cell lines representing estrogen receptor-positive, HER2+ and triple-negative (TN) subtypes and for its effect on tumor growth, vascularization, necrosis, and lung metastasis incidence in NOD/SCID mice xenografted with the TN breast cancer line MDA-MB-231. Mesenchymal TN cell lines, which are the richest in putative tumor stem cells among the different breast cancer cell subtypes, were the most susceptible to apoptosis induced by CD34-TRAIL+ cel…
Prognostic Influence of Pre-Operative C-Reactive Protein in Node-Negative Breast Cancer Patients
2014
The importance of inflammation is increasingly noticed in cancer. The aim of this study was to analyze the prognostic influence of pre-operative serum C-reactive protein (CRP) in a cohort of 148 lymph node-negative breast cancer patients. The prognostic significance of CRP level for disease-free survival (DFS), metastasis-free survival (MFS) and overall survival (OS) was evaluated using univariate and multivariate Cox regression, also including information on age at diagnosis, tumor size, tumor grade, estrogen receptor (ER), progesterone receptor (PR) and human epidermal growth factor receptor 2 (HER2) status, proliferation index (Ki67) and molecular subtype, as well as an assessment of the…
Mapping and quantification of biomolecules in tumor biopsies using bioluminescence
1996
Quantitative bioluminescence and single-photon imaging have been applied for mapping concentration distributions of metabolites, such as adenosine triphosphate (ATP), glucose and lactate, in biopsies of cervical cancers in patients. Biopsies were taken before a conventional radiation treatment, and a number of clinically relevant data, such as local tumor control, patient survival, metastatic spread and so forth, were documented. There was no correlation between staging or grading and any of the metabolic parameters measured. Local correlations between ATP, glucose and lactate on a pixel-to-pixel basis were generally positive, with respective Spearman's correlation coefficients less in pati…
New cell lines of gastric and pancreatic cancer: distinct morphology, growth characteristics, expression of epithelial and immunoregulatory antigens.
1995
Two new cell lines from stomach cancers and one from a pancreatic carcinoma are presented. MZ-GC-1 was established from a hepatic metastasis of a well differentiated gastric adenocarcinoma. MZ-GC-2 was derived from ascites induced by a poorly differentiated gastric adenocarcinoma. MZ-PC-1 originated from the pleural effusion of a moderately well differentiated pancreatic ductal adenocarcinoma. MZ-GC-1 cells were adherent and partially polarized, connected tightly via desmosomes. In contrast MZ-GC-2 cells consisted of slightly adherent or floating subpopulations and displayed no desmosomes. MZ-PC-1 cells were adherent and showed polarized growth, connected by apical junctional complexes. Cel…
Proliferative verrucous leukoplakia, squamous cell carcinoma and axillary metastasis.
2009
Proliferative verrucous leukoplakia (PVL) is an aggressive form of oral leukoplakia with multifocal presentation, high rates of recurrence and malignant transformation. Although development of regional lymph node metastasis is relatively frequent in patients with oral squamous cell carcinoma, axillary metastasis is quite uncommon. This paper presents a case of a 64-year-old female patient who was diagnosed with PVL and developed five oral squamous cell carcinomas and later an axillary lymph node metastasis.
MMP-13 stimulates osteoclast differentiation and activation in tumour breast bone metastases
2011
INTRODUCTION: The increased bone degradation in osteolytic metastases depends on stimulation of mature osteoclasts and on continuous differentiation of new pre-osteoclasts. Metalloproteinases (MMP)-13 is expressed in a broad range of primary malignant tumours and it is emerging as a novel biomarker. Recent data suggest a direct role of MMP-13 in dissolving bone matrix complementing the activity of MMP-9 and other enzymes. Tumour-microenvironment interactions alter gene expression in malignant breast tumour cells promoting osteolytic bone metastasis. Gene expression profiles revealed that MMP-13 was among the up-regulated genes in tumour-bone interface and its abrogation reduced bone erosion…