Expression of epithelial growth factor receptor as a protein marker in oral reticular and erosive lichen planus.

Background: Oral lichen planus (OLP) is a chronic inflammatory mucosal disease that is classified as a premalignant condition. Epithelial growth factor receptor (EGFR) is associated with tumorigenesis and tumor progression and is overexpressed in several oral malignant disorders. Despite the association of EGFR overexpression with oral potentially malignant lesions, few studies have analyzed its expression in OLP, showing controversial results.

Evaluation of copper salivary level in oral squamous cell carcinoma, occupationally copper exposed, and its normal population and its association with cytomorphologic changes of oral mucosa.

Background: Oral squamous cell carcinoma (SCC) is one of the most common malignancies in oral cavity. Hence, presenting methods for early diagnosis and find the etiologic factors of oral SCC are important. Saliva analysis can be used to discover various conditions because of its noninvasive methods.

Estrogen receptor α expression in different stages of salivary gland mucoepidermoid carcinoma.

Background: Since salivary and breast glands are both considered as a tubulo-acinar, exocrine glands, and they have a common neoplastic morphology, it is not surprising if they share a similar molecular mechanism responsible for their neoplastic transformation. From the first description of estrogen receptor-α (ER-α) in salivary tumors, tremendous attentions have been attracted to this receptor for evaluating its impact in mucoepidermoid carcinoma (MEC).

Materials And Methods: In this descriptive analytics, 28 samples of MEC (14 high grade and 14 low grade) were collected from the Oral and Maxillofacial Pathology Department of Isfahan Dental School and Isfahan Alzahra Hospital.

Analysis of artifacts in oral and maxillofacial histopathologic sections and related reasons.

Background: Artifacts, artificial structures at microscopic section, may lead to incorrect diagnosis and wrong treatment of a pathological entity. The aim of this study was to evaluate the frequency of various artifacts found in oral and maxillofacial histopathologic sections.

Materials And Methods: In this cross-sectional study, the specimens included the histopathologic sections along with their diagnosis that were collected from the archive of Isfahan Oral and Maxillofacial Pathology Department using systematic sampling method over a 10-year period.

Central unilocular mucoepidermoid carcinoma of the mandible: A case report and literature review.

Mucoepidermoid carcinoma (MEC) is the most common salivary gland malignancy. Central MEC (CMEC) is a rare tumor which affects women more than men and is more common in the mandible. Most cases are histologically classified as low-grade tumor and radiographically appear as well-defined unilocular or multilocular radiolucent lesion, although this tumor causes destruction and metastasis to other organs.

Immunohistochemically Detection of Angiogenesis in Oral Pre-Cancerous Lesions Compared with Oral Invasive Carcinomas.

Background: Angiogenic activity is an important event in oral carcinogenesis. During transition of normal oral mucosa to different grades of dysplasia and to invasive carcinoma, significant increase of vascularity occurs. Angiogenesis can be determined by immunohistochemical assessment of several endothelial cell markers like Endogelin (CD 105), expressed in activated endothelial cells and associated with neovasculature, and the vascular endothelial growth factor (VEGF).

A Comparative Study of the Perspectives of General and Oral and Maxillofacial Pathologists about the Rate and Value of Second Referral in Assessment of Oral and Maxillofacial Pathologic Lesions.

The main purpose in the practice of pathology is to provide an accurate diagnosis. Second referral and reassessment by a second pathologist significantly cause diagnostic errors, help to make an accurate diagnosis, and improve patient management. This study was aimed to assess the general perspectives of general and oral and maxillofacial pathologists in Iran on second referrals.

Epidemiological Evaluation of Head and Neck Sarcomas in Iran (the Study of 105 Cases Over 13 Years).

Background: Head and neck sarcomas are exceedingly rare and they include 4% - 10% of all sarcomas and less than 1% of all neoplasm of head and neck.

Objectives: The aim of this study is to evaluate the epidemiological characteristics of head and neck sarcomas of patients in Isfahan, Iran.

Patients And Methods: In this retrospective study, from the 16000 patients whose files were evaluated, the total number of 105 head and neck sarcomas were collected.

Comparative evaluation of eosinophils in normal mucosa, dysplastic mucosa and oral squamous cell carcinoma with hematoxylin-eosin, Congo red, and EMR1 immunohistochemical staining techniques.

Background: Oral squamous cell carcinoma is the most common malignant lesion of the oral cavity, and it involves various molecular mechanisms. The development of oral squamous cell carcinoma is influenced by the host immune cells, such as eosinophils. The present study was conducted to compare the presence of eosinophils in normal mucosa, dysplastic mucosa, and oral squamous cell carcinoma by -hematoxylin- eosin staining, Congo red staining, and epidermal growth factor-like (EGF-like) module containing a mucin-like hormone receptor1 (EMR1) immunohistochemical marker.

Granulocytic sarcoma (chloroma) presenting as multiple sites in oral cavity: report of a case.

Granulocytic Sarcoma (GS), an unusual extramedullary tumor, is composed of immature granulocytic precursor cells. The intraoral occurrence of this tumor is extremely rare. Here, we report a case of GS with palatal swelling, gingival lesions in maxilla and mandible and aleukemic presentation in a 45- year- old male.

Epithelial dysplasia in oral cavity.

Among oral lesions, we encounter a series of malignant epithelial lesions that go through clinical and histopathologic processes in order to be diagnosed. Identifying these processes along with the etiology knowledge of these lesions is very important in prevention and early treatments. Dysplasia is the step preceding the formation of squamous cell carcinoma in lesions which have the potential to undergo dysplasia.

Mandibular intraosseous schwannoma in a child: Report of a rare case.

Intraosseous schwannomas is a very rare neoplasm, and less than 50 cases have been reported in the medical literature. In this article, the clinical, radiographic and histopathologic appearances of a rare case of intraosseous schwannomas are presented. The importance of this case is that other benign central lesions such as odontogenic tumors and cysts might be included in differential diagnosis.