Search results for "METASTASIS"

Breakthrough Pain (BTP) in Opioid-Tolerant Cancer Patients: A Pan-European Open-Label Multicentre Study with Fentanyl Buccal Tablet (FBT)

2012

ABSTRACT BTP, a transitory exacerbation of pain that occurs on a background of otherwise controlled persistent pain, is a common problem in cancer patients. FBT is indicated for the treatment of BTP in adults with cancer already receiving maintenance opioid therapy for chronic cancer pain and should be titrated to an effective dose that provides adequate analgesia and minimises undesirable events. In this study, patients entered a screening period and were randomized during an open-label titration period to a starting FBT dose of 100 µg (group A) or 200 µg (group B) to identify the FBT effective dose and then treated in an open-label period (for 8 BTP episodes). Patients' inclusion followed…

A systematic review on external ear melanoma

2014

Summary Background External ear melanoma accounts for only 1% of all cutaneous melanomas, and data on its optimal management and prognosis are limited. Aim We aim to review the literature on external ear melanoma to guide surgeons in the treatment of this uncommon and peculiar pathology. Materials and methods A systematic review of English language studies on ear melanoma published from 1993 to 2013 was performed using the PubMed electronic database. Data on epidemiology, oncological treatment (tumor resection and regional lymph nodes management), and reconstruction were extrapolated from selected papers. Results The total number of patients was 858 (30 studies). The helix was the most comm…

Non-muscle myosin II as a predictive factor in head and neck squamous cell carcinoma

2018

Background The present study attempted to provide information regarding non-muscle myosin II (MII) isoforms immunoreactivity in patients with head and neck squamous cell carcinoma (HNSCC) and analysis of the patients’ clinical status after 5 years of monitoring. Material and Methods A semiquantitative analysis of the immunoreactivity of the MII isoforms was performed in 54 surgical specimens and its correlation with clinical and pathological variables and prognosis was verified. Data were analyzed using chi-square, Mann-Whitney and Kruskal-Wallis tests. To evaluate the survival over the total monitoring time and any connection with the proteins studied, the Kaplan-Meier analysis was used. P…

2021

Bone is a frequent site of metastases, being typically associated with a short-term prognosis in affected patients. Photodynamic therapy (PDT) emerges as a promising alternative treatment for controlling malignant disease that can directly target interstitial metastatic lesions. The aim of this study was to assess the effect induced by PDT treatment on both primary (giant cell bone tumor) and human bone metastatic cancer cell lines (derived from a primary invasive ductal breast carcinoma and renal carcinoma). After 24 h post light delivery (blue light-wavelength 436 nm) with 5-aminolevulinic acid, the effect on cellular migration, viability, apoptosis, and senescence were assessed. Our resu…

Genetic and epigenetic alterations as hallmarks of the intricate road to cancer.

2003

Despite the clonal origin of most tumors, their tremendous heterogeneity suggests that cancer progression springs from the combined forces of both genetic and epigenetic events, which produce variant clonal populations, together with the selective pressures of the microenvironment, which promote growth and, perhaps, dissemination of variants with a specific set of characteristics. Although the importance of genetic mutations in cancer has long been recognized, the role of epigenetic events has been suggested more recently. This review focuses on the genetic and epigenetic molecular mechanisms involved in cancer onset and progression, and discusses the possibility of new strategies in the de…

Cancer stem cells – old concepts, new insights

2008

Cancer has long been viewed as an exclusively genetic disorder. The model of carcinogenesis, postulated by Nowell and Vogelstein, describes the formation of a tumor by the sequential accumulation of mutations in oncogenes and tumor suppressor genes. In this model, tumors are thought to consist of a heterogeneous population of cells that continue to acquire new mutations, resulting in a highly dynamic process, with clones that out compete others due to increased proliferative or survival capacity. However, novel insights in cancer stem cell research suggest another layer of complexity in the process of malignant transformation and preservation. It has been reported that only a small fraction…

Biological consequences of tumor hypoxia

2001

Growing evidence from experimental and clinical studies points to the fundamental, pathophysiologic role of hypoxia in solid tumors. Intratumoral hypoxia is a consequence of a structurally and functionally disturbed microcirculation, with deterioration of the diffusion geometry and of tumor-associated anemia. Hypoxia-induced changes of the proteome in the neoplastic and stroma cells may lead to neoplastic growth impairment through molecular mechanisms, resulting in cellular quiescence, differentiation, and apoptosis. Alternatively, hypoxia-induced proteome changes activating nonspecific stress response, anaerobic metabolism, angiogenesis, tissue remodeling, and change of cell contacts may p…

Factors that influence treatment delay in patients with colorectal cancer

2016

// Irene Zarcos-Pedrinaci 1, 11 , Alberto Fernandez-Lopez 2 , Teresa Tellez 1, 11 , Francisco Rivas-Ruiz 1, 11 , Antonio Rueda A 3, 11 , Maria Manuela Morales Suarez-Varela 4 , Eduardo Briones 5 , Marisa Bare 6, 11 , Antonio Escobar 7, 11 , Cristina Sarasqueta 8, 11 , Nerea Fernandez de Larrea 9, 11 , Urko Aguirre 10, 11 , Jose Maria Quintana 10, 11 , Maximino Redondo 1, 11 and On Behalf of the CARESS-CCR Study Group 1 Research Unit, Agencia Sanitaria Costa del Sol, Marbella, Spain 2 Servicio de Cirugia, Agencia Sanitaria Costa del Sol, Marbella, Spain 3 Servicio de Oncologia Medica, Agencia Sanitaria Costa del Sol, Marbella, Spain 4 Unit of Public Health, Hygiene and Environmental Health, …

Treatment of esophageal cancer in inoperable elderly patients: our experience

2009

The esophagus carcinoma has an incidence rate of 3–4 new cases per 100,000 inhabitants, per year, with a male/female ratio of 3:1 and with a low incidence between the VI–VII decade of life. In Italy, the incidence rate equals 2,000 new cases/year with a mortality rate of 3–5/100,000 inhabitants.

Extracranial metastasizing solitary fibrous tumors (SFT) of meninges: Histopathological features of a case with long-term follow-up

2012

Extrapleural solitary fibrous tumors are uncommon mesenchymal neoplasms frequently observed in middle-aged adults and are classified, according to the WHO classification of soft tissue tumors, as part of the hemangiopericytoma tumor group. However, these two entities remain separated in the WHO classification of tumors of the central nervous system. In fact, meningeal solitary fibrous tumors are believed to be benign lesion and only in a minority of cases local relapses have been described, although detailed survival clinical studies on solitary fibrous tumors of meninges are rare. In contrast to hemangiopericytoma, which frequently shows distant extracranial metastases, such an event is ex…