human papillomavirus (hpv) has also been suggested as an etiology of esophageal squamous cell carcinoma (scc). the aim of this study was to investigate the prevalence of hpv infection in esophageal sccs in our region with strict contamination control to prevent false positive results. thirty cases of esophageal squamous cell carcinomas were chosen by simple random selection in a period of two y...

oral lichen planus (olp) is classified as a potential malignant disorder, and epidermal growth factor (egf) may play a key role in cancer development. the aim of this study was to compare serum and saliva egf among patients with olp and oral squamous cell carcinoma (oscc). a cross-sectional study was performed on 27 patients with olp (10 reticular and 17 atrophic-erosive forms), 27 patients wit...

purpose : to describe a case of bilateral squamous cell carcinoma in right nasal and left temporal conjunctiva, simulating bilateral pterygium case report : a reddish fibrovascular pterygium-like lesion was observed in the nasal side of bulbar conjunctiva on the right eye and temporal conjunctiva of the left eye. medical examination not revealed any coexistent malignancy elsewhere excisional bi...

background and objective: oral cancer accounts for less than 3% of all cancers. despite recent improvement in diagnostic and treatment methods, the overall survival of the disease is unfavorable. several studies have been performed to assess factors influencing lymph node metastasis and prognosis. the aim of this study was to evaluate some clinical and pathological factors influencing lymph nod...

lichen planus (lp) is a chronic inflammatory disease of probable immune-based etiology. the pathogenesis of lp is unclear, but apoptotic changes in epidermal (epithelial) cells have been reported. destruction of the basal cell layer is observed and many changes in cell proliferation, cell repair and cell death occur in the injured mucosal epithelium. the aim of this study was to evaluate and co...

a rare case of squamous cell carcinoma ex pleomorphic adenoma in maxillary sinus is presented. the patient is a 50-year-old woman presenting with a slow-progressive swelling in left side of her face that she has noticed 2 years earlier. the lesion was not painful and caused asymmetry and mild exophthalmos. microscopic examination revealed that the tumor was composed of two components partly of ...

introduction: esophageal squamous-cell carcinoma (scc) is one of the most common malignancies in iran. to reduce the incidence of esophageal scc, it is important to recognize the controllable risk factors and prevent them. celiac disease is widely known as a possible risk factor for esophageal scc.  thus, we decided to assess the frequency of celiac disease in esophageal scc patients in north e...

it has been argued that oral lichen planus (olp) may increase the risk of oral cancer. patients with olp may be at an increased risk for developing of oscc (oral squamous cell carcinoma). here, the author reports a case of olp initially presenting with a clearly benign olp lesion that transformed into oscc over a course of 18 months. this report may provide a clear evidence for olp lesion as a ...