amelanotic melanoma is a variant of malignant melanoma comprising 2% to 8% of all malignant melanomas. the amelanotic presentation of melanoma in the oral cavity is extremely rare and has been reported only occasionally in the literature. moreover, the lack of melanin makes these tumors difficult to diagnose than that of pigmented lesions and the prognosis tends to be poorer. herein, we report ...

A 12-year-old male English Pointer was examined due to a soft-tissue swelling at the medial canthus of the right orbital region, which was causing facial deformity. The dog had epiphora, purulent nasal discharge, epistaxis, dyspnea, and progressive weight loss. An intraoral mass was observed near the right maxillary premolars. Neoplastic disease was diagnosed based on ancillary tests, which inc...

Background : Tumors metastasizing to the oral and maxillofacial region are rare contribute about 1% of all malignancies. Oral metastases usually occur in advanced stages cancers. Mandible is most common site for metastasis. It a great challenge clinician diagnose metastatic lesion due lack pathognomonic signs symptoms. Dental surgeons play an important role patients where metastasis first sign ...

Dear Editor-in-Chief Myxoid tumors of the oral cavity encompass a broad spectrum of lesions, primarily neoplastic (1). Significant variations in the biological behavior ranging from completely harmless to malignant neoplasm require an accurate histopathological diagnosis to ensure a proper treatment (2). A considerable overlapexists between clinical and histopathological features of these group...

Whether use of combined oral contraceptives (OC) protects against benign ovarian tumors is unknown. A case-control study of pathologically confirmed benign ovarian tumors was conducted in the New York City area and included cases diagnosed from January 1, 1992, to December 31, 1993, and controls identified by random digit dialing. There were 196 cases with serous adenomas, 176 with teratomas, 3...

BACKGROUND A lot has changed in terms of intervention technique, indications and embolic agents since Duggan introduced embolization to management of postraumatic epistaxis in 1970. Embolization is used in treatment of spontaneous and traumatic epistaxis, palliative tumors and vascular defects, as well as vascularized tumors and juvenile nasopharyngeal angiofibromas. The possibility of simultan...

introduction: 90% of the tumors in the head and neck are squamous-cell carcinomas (hnscc), which have overall 5- year survival rate between 50% -60%. cd44 has been shown to be associated with the prognosis.  materials and methods: biopsy specimens of 51 patients with oral tongue scc were evaluated by immunohistochemistry (ihc) for the cd44 antibody.  results: there was no significant correlatio...