snus (nass) is a form of snuff used in a similar manner to american dipping tobacco, but it does not typically result in a need for spitting. possible hazards associated with this material include malignant and premalignant lesions in the oral cavity and gastrointestinal tract. the use of smokeless tobacco has increased in the middle east in recent decades, particularly among teenagers and youn...

metastasis to the oral region is very rare and accounts for less than 1% of oral malignant tumors. breast, lung, kidney, adrenal, gastro intestinal tract and prostates are most common primary tumors from which metastasis to oral region occur frequently. metastasis from thyroid gland is extremely rare to oral region. we present an unusual case of metastatic follicular carcinoma of thyroid in max...

Introduction: Metastatic lesions of the oral cavity are extremely rare, accounting for approximately 1% of all malignant oral tumors. The most common primary sources of metastatic tumors in the oral region are, from the most to the least common, the breast, lung, kidney, bone, and colon. Renal cell carcinoma accounts for nearly 3% of all adult malignancies. It usually metastasizes to the lungs,...

background: betel nut and betel quid chewing are from major etiological factor for oral cancer. they also increase the risk of systemic diseases such as asthma, diabetes mellitus, metabolic syndrome, myocardial infarction, hypertension, and other cardiovascular diseases. methods: sixty three patients of oral cancer in our institution during jan. 2007 to may 2011 were included in our study. this...

background: although color doppler ultrasonography (cdus) is useful in the diagnosis of various diseases of the head and neck, flow signals in oral malignant masses are less studied; hence the present study assesses the usefulness of color doppler ultrasonography in quantifying oral squamous cell carcinoma (oscc) vascularization. in addition, we determine the hemodynamic parameters by spectral ...

Background and objective:Candida albicans (C. albicans) play a significant role in oral mucosal carcinogenesis. It can be identified using various techniques in cytological smears. But, very few studies have been conducted on histopathological sections using calcofluor white M2R under fluorescent microscopy. Additionally, detection and quantification ...

introduction: metastatic lesions of the oral cavity are extremely rare, accounting for approximately 1% of all malignant oral tumors. the most common primary sources of metastatic tumors in the oral region are, from the most to the least common, the breast, lung, kidney, bone, and colon. renal cell carcinoma accounts for nearly 3% of all adult malignancies. it usually metastasizes to the lungs,...

the purpose of the present study was to estimate the frequency of hpv dna in four groups of oral lesions, including oral squamous cell carcinoma. sixty paraffin-embedded oral tissue samples were examined for the presence of hpv dnas using the pcr technique. these specimens were obtained from patients with oral squamous cell carcinoma (oscc), leukoplakia, oral lichen planus (olp), and pyogenic g...

Background & Aims: Leukoplakia is the most common premalignant or potentially malignant lesion of the oral mucosa and its potentiality for malignant transformation is unpredictable. The aim of the present study was to evaluate p53 expression in normal oral epithelium, leukoplakia and oral squamous cell carcinoma. Methods: The standard Biotin streptavaidin peroxidase immunohistochemical staining...

Introduction: Although recent studies show the association of eosinophils with different tumors including oral malignancies, the role of eosinophils in premalignant conditions of the oral cavity is not known precisely. Therefore, this study aimed to determine the number of eosinophils in premalignant and malignant conditions of the oral cavity and its role in progression to malignancy. Materia...