OBJECTIVES To analyze the frequency and type of the most common benign tumors of the oral mucosa found at the Hospital Stomatology Service, and to study the clinical characteristics and possible etiological factors. MATERIAL AND METHODS This is a retrospective study of 300 patients with histologically diagnosed benign tumors of the oral mucosa. Data was compiled for each case, documenting inf...

Ameloblastoma is a slow-growing and locally invasive epithelial odontogenic tumor of the jaw that runs benign course in most cases. Granular cell ameloblastoma rare subtype ameloblastoma, showing granular transformation its cytoplasm. It considered as an aggressive variant ameloblastoma. Herein, we report case 34-year-old male patient who presented with swelling left cheek for 1-year duration r...

Mouse models for cancer represent powerful tools to analyze the causal role of genetic alterations in cancer development. We have developed a novel mouse model that allows the focal activation of mutations in stratified epithelia. Using this system, we demonstrate that activation of an oncogenic K-rasG12D allele in the oral cavity of the mouse induces oral tumor formation. The lesions that deve...

Background: Neuroectodermal Tumors (PNET) are malignant small cells neoplasm mainly occurring in children but can occur at any age. Extensive bleeding into the pleural cavity is rare In Children. Hemothorax would be compatible with a variety of congenital anomalies including sequestration, patent ductus artreiosus, and pulmonary arteriovenous malformation. Case report: A 2.5-years old girl who ...

Picture 1. Oral tumor and chest computed tomography of the patient. (A). Oral finding on ad mission shows upper gingival tumor with bleeding and ulceration. (B). Computed tomography (CT) scan of the chest revealed multiple tumors in bilateral lung bases. (C). Oral tumor was re duced in size immediately 14 days after methotrexate withdrawal. (D). Chest CT on day 41 after withdrawal of MTX shows ...

OBJECTIVES/HYPOTHESIS To identify factors contributing to local tumor recurrence in oral cavity and laryngeal squamous cell carcinomas treated with surgery alone, to approximate tumor age from time to recurrence data by applying Collins' law, and to identify factors that may affect time to recurrence. STUDY DESIGN Retrospective review. METHODS A retrospective review of all patients treated ...

Ovarian borderline serous tumors are uncommon. Combination of borderline serous adenofibromatous tumor and prominent micro papillary architecture is not previously reported. We report a case of borderline papillary serous adenofibromatous tumor (also called serous adenocarcinofibroma) with extensive micropapillary pattern in a 27 year-old married woman. She was infertile and presented with diff...

Salivary gland tumors are among the pathologies in the head and neck that may be challenging in diagnosis and treatment. Most benign tumors occur in the parotid gland. Pleomorphic Adenoma is the most common type. Basal Cell Adenoma is a subtype of the Monomorphic Adenoma with rare occurrence. Proper diagnosis and clinical evaluation by the use of radiography can lead the physician to the best t...

within a single tumor clone, cells have significantly different abilities to proliferate and form new tumors. this has led to the hypothesis that most cells in a cancer have a limited ability to divide and only a small subset of distinct cells, the cancer stem cells (cscs), has the capacity to self-renew and form new tumors . it has been proposed that the development of tumors is based exclusiv...