Abstract
Intraosseous squamous cell carcinomas of the mandible arise de novo or secondary to a tumor or transformed cyst epithelium. Current diagnostic tests frequently fail to distinguish between these tumors, leading to confusing classification schemes. We report the functional genomic analysis of a mandibular odontogenic carcinoma. Malignant keratinocytes from the lesion were isolated using laser capture microdissection. Target sample generated from the total RNA of the LCM-procured cells was used to hybridize high-density oligonucleotide arrays. Functional genomic analysis of the odontogenic carcinoma database compared with four oral mucosal squamous cell carcinoma gene expression databases was performed. Preliminary results suggest a small subset of genes distinguish this odontogenic carcinoma from oral mucosal epidermoid carcinomas.
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