background:   materials and methods: this was a cross-sectional study carried out among 70 samples, including 10 samples from normal healthy mucosa categorized into group 1, group 2 (30 olp), and group 3 (30 oed) samples. five sections (4 μm thick) were obtained and stained with monoclonal antibodies such as ki-67, p53, bcl-2, and bax and analyzed for number of positive cells and also for inten...

It is generally accepted that the outcome of oral malignant melanoma is worse than that of cutaneous and systemic head and neck melanoma. The five-year survival reported in the literature for oral melanomas varies from 0 20 % (Liversedge, 1975, Rapidis et al., 2003, Rapini et al., 1985), whereas the overall survival for head and neck melanomas ranges between 20 and 48 % (Guzzo et al., 1993, Pat...

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 ...

Three tumors of widely differing structure occurring in, Salientia (Amphibia) are described. They are: (a) a nephroblastoma, (b) an atypical facial papilloma or melano carcinoma, and (c) an epithelioma resembling ulcus rodens. The first two tumors oc curred in specimens of the South African claw-footed toad (Xenopus laevis D.), the third in a specimen of the common grass frog (Rana temporaria L.).

cancer of the oral cavity accounts for approximately 3% of all malignancies diagnosed annually in 270,000 patients worldwide. oral cancer is the 12th most common cancer in women and the 6th in men. many oral squamous cell carcinomas develop from potentially malignant disorders (pmds). lack of awareness about the signs and symptoms of oral pmds in the general population and even healthcare provi...

Background and Aim: Oral health can be influenced by habitual areca nut chewing. The consumption of products containing areca nut, such as paan, gutkha, supari, etc., is common in Asian countries, such as India, Bangladesh, and Pakistan. In Iran, areca nut product consumption is common in the southeast of Iran, especially in Chabahar, Iranshahr, and Nikshahr cities, which are in proximity to th...

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...

squamous cell carcinoma (scc) is the most common malignant tumor of the oral cavity and one of the ten most common causes of death. it arises from dysplastic oral squamous epithelium. considering the pathogenesis of scc, a smooth and intact surface in this lesion is not a usual finding. in this paper, we report an extremely rare case of oral scc in buccal mucosa presenting as an exophytic lesio...