نتایج جستجو برای: squamous carcinoma
تعداد نتایج: 403965 فیلتر نتایج به سال:
Background: Oral squamous cell carcinoma is a major cause of cancer-related deaths world-wide. Histologically it arises from the benign squamous epithelium lining the oral cavity and is conventionally divided into well, moderate, and poorly differentiated subtypes. Nicotinamide phosphoribosyltransferase catalyses the rate-limiting step of nicotinamide adenine dinucleotide synthesis and is highl...
Background and Aim: Angiogenesis plays a central role for development and progression of malignant tumors.It is considered as an important factor for predicting of malignant tumor's behavior such as metastasis to lymph nodes and other clinicopathologic factors. However , it is still a controversial factor especially in oral squamous cell carcinoma.The aim of this study was to evaluate the corre...
A comparative evaluation on E-cadherin expression in oral squamous cell carcinoma with and without regional lymph node metastasis Dr. N. Mohtasham* - Dr. A. Omidi**- Dr. K. Kamyabhesari*** - Dr. M. Shakeri**** *- Assistant Professor of Oral Pathology Dept. - Faculty of Dentistry – Mashhad University of Medical Sciences. **- Professor of Pathology Dept. – Ghaem Hospital. ***- Fellowship of Derma...
BACKGROUND AND PURPOSE Human papillomavirus-associated oropharyngeal squamous cell carcinoma is increasing in prevalence and typically occurs in younger patients than human papillomavirus-negative squamous cell carcinoma. While imaging features of human papillomavirus-positive versus human papillomavirus-negative squamous cell carcinoma nodal metastases have been described, characteristics dist...
BACKGROUND Squamous differentiation occurs in up to 20% of urothelial carcinoma cases and is thought to be an unfavorable prognostic factor. METHODS Data from urothelial carcinoma in patients treated with cystectomy from 2002 to 2014 at Roswell Park Cancer Institute were retrospectively reviewed. A 2-tier system was adopted for stage analysis. T1 and T2 disease were grouped in organ-confined ...
BACKGROUND Non-glandular papillary carcinoma of the cervix are uncommon tumours. In Uganda where cervical carcinoma is very common, no cases of papillary squamous cell carcinoma of the cervix has been reported. OBJECTIVES To ascertain the occurrence and describe the clinicopathological features of papillary squamous cell carcinoma of the cervix in Uganda. STUDY DESIGN Retrospective review o...
Kindler syndrome is a rare autosomal recessive genodermatosis characterized by trauma-induced acral blisters in infancy and childhood, photosensitivity, and progressive poikiloderma. Other clinical features include chronic erosive gingivitis, dysphagia, esophageal and urethral strictures, ectropion, and an increased risk of mucocutaneous squamous cell carcinoma. We describe a patient with Kindl...
Introduction: Eosinophils produce proteases that stimulate invasion in cancers. Due to the more malignant potential of oral squamous cell carcinoma (OSCC) compared to cutaneous squamous cell carcinoma (CSCC), the aim of the present study was to compare tissue eosinophilia between OSCC and CSCC samples to understand whether tissue eosinophilia play a role in different biological...
Introduction: A rare case of basaloid squamous cell carcinoma (BSCC) of the larynx, which has not been previously reported, is described. Case Report: A 60-year-old man was presented to the Otolaryngology Department with progressive dyspnoea and dysphagia to solids for over a period of 1 week. Direct laryngoscopy revealed a tumour at the laryngeal aspect of the epiglottis, which prolapsed into...
Background: Head and neck squamous cell carcinoma (HNSCC) is the malignancy of squamous cells (the epidermal layer of skin) in cavities in head and neck includes: larynx, pharynx, paranasal sinuses and oral cavity. The main goal of this research was to understand the effect of mutations in two important genes (KRAS and BRAF) in RAS/MAP kinase (EGFR) signaling pathway in tumor cells with head an...
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