Search results for "Skin Neoplasm"

Circulating miRNA expression analysis reveals new potential biomarkers for human cutaneous melanoma staging.

2019

Prevalence and risk factors of actinic keratosis in patients attending Italian dermatology clinics

2017

Background: Actinic keratosis (AK) is a common keratinocyte intraepidermal neoplasia. Objective: To assess AK prevalence and potential risk factors in patients attending Italian general dermatology clinics. Materials & methods: This retrospective study was conducted on clinical data from consecutive white outpatients aged ≥30 years, attending 24 general dermatology clinics between December 2014 and February 2015. AK prevalence (entire population) and multivariate risk factor analysis (patients with current/previous AK and complete data) are presented. Results: AK prevalence in 7,284 patients was 27.4% (95% CI: 26.4-28.4%); 34.3% in men and 20.0% in women (p<0.001). Independent AK ris…

Multispectral integral imaging acquisition and processing using a monochrome camera and a liquid crystal tunable filter

2012

This paper presents an acquisition system and a procedure to capture 3D scenes in different spectral bands. The acquisition system is formed by a monochrome camera, and a Liquid Crystal Tunable Filter (LCTF) that allows to acquire images at different spectral bands in the [480, 680]nm wavelength interval. The Synthetic Aperture Integral Imaging acquisition technique is used to obtain the elemental images for each wavelength. These elemental images are used to computationally obtain the reconstruction planes of the 3D scene at different depth planes. The 3D profile of the acquired scene is also obtained using a minimization of the variance of the contribution of the elemental images at each …

Natural polyphenols in cancer therapy.

2011

Natural polyphenols are secondary metabolites of plants involved in defense against different types of stress. Extracts containing these compounds have been used for thousands of years in traditional eastern medicine. Polyphenols act on multiple targets in pathways and mechanisms related to carcinogenesis, tumor cell proliferation and death, inflammation, metastatic spread, angiogenesis, or drug and radiation resistance. Nevertheless, reported effects claimed for polyphenols are controversial, since correlations between in vitro effects and in vivo evidence are poorly established. The main discrepancy between health claims versus clinical observations is the frequent use of nonphysiological…

Early diagnosis of primary melanoma of caecum. Case report and review of the literature.

2021

Malignant gastrointestinal melanoma is usually a metastatic lesion. We report the case of a 79-year-old female asymptomatic patient. Colonoscopy revealed one plane 15 mm pigmented lesion in the caecum. Neither CT scan of the abdomen nor right hemicolectomy revealed no metastatic disease. Histopathological examination of the surgical specimen was indicative of malignant melanoma.A set of additional enquires such as laboratory and imaging tests did not point out any suspicious lesions in the skin, eye, leptomeninges or other sites. Therefore, we made the diagnosis of primary colonic melanoma.The diagnosis of this disease is still a challange and often demanding for a multidisciplinary approac…

Adverse events associated with encorafenib plus binimetinib in the COLUMBUS study: incidence, course and management.

2019

Abstract Background Dual inhibition of the mitogen-activated protein kinase pathway with BRAF/MEK inhibitor (BRAFi/MEKi) therapy is a standard treatment for BRAFV600-mutant metastatic melanoma and has historically been associated with grade III pyrexia or photosensitivity depending on the combination used. The objective of this study was to fully describe adverse events from the COLUMBUS study evaluating the most recent BRAF/MEK inhibitor combination encorafenib+binimetinib. Patients and methods Patients with locally advanced, unresectable or metastatic BRAFV600-mutant melanoma were randomised to receive encorafenib 450 mg once daily plus binimetinib 45 mg twice daily, encorafenib 300 mg on…

A case of squamocellular uterine cervix carcinoma metastatic to the skin with enterocutaneous fistula.

2006

Metastases to the skin complicated by enterocutaneous fistula are a rare event in gynecological malignancies. We present the case of a 70-year-old woman with uterine cervix carcinoma metastatic to the skin and treated with surgery and radiotherapy. The last relapse to the skin was complicated by the formation of an enterocutaneous fistula. This low-output fistula was treated with surgery and adequate supportive care. The treatment of enterocutaneous fistulas may be either invasive (surgical resection, surgical repair with corrective procedures or with myocutaneous flaps, colonic and/or urinary diversion, endoscopic treatments with metallic stents) or conservative (skin care and local disin…

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…

The immunoexpression of matrix metalloproteinase MMP2 and MMP9 as prognostic significance in cutaneous metastases of breast carcinoma

2004

Aim. Many types of cutaneous metastasis occur in carcinoma of the breast. Cutaneous metastasis has been reported as having a poor prognosis. A fundamental prerequisite for carcinoma cells to metastatize is the ability of the tumour cells to dissociate from the primary tumour and to breach matrix proteins. Degradation and remodelling of matrix proteins can be affected by a variety of enzymatic activities including the matrix metalloproteinases (MMPs). We have analysed the sensitivity, specificity and predictive value of immunohistochemical staining with monoclonal antibodies directed against gelatinase A (MMP-2) and B (MMP-9) in cutaneous metastatic breast carcinoma. Methods. Twenty-two pati…

Overexpression of bone morphogenetic protein-6 (BMP-6) in murine epidermis suppresses skin tumor formation by induction of apoptosis and downregulati…

2001

Bone morphogenetic protein-6 (BMP-6) is a member of the transforming growth factor-beta superfamily. In murine skin, BMP-6 is highly expressed in postmitotic keratinocytes from day 15.5 p.c. till day 6 p.p. Expression in adult skin remains at very low levels, but pathological conditions such as wounding induce the expression of BMP-6. We demonstrate that tumor promotion by TPA (12-O-tetradecanoylphorbol-13-acetate) also induces expression of BMP-6 in suprabasal keratinocytes. This induction is due to post-transcriptional regulation since the level of BMP-6 mRNA remained unchanged. We performed two-stage skin carcinogenesis experiments with transgenic mice epidermally overexpressing BMP-6. T…