Hybrid Odontogenic Tumors: A Controversy

Excerpt

Tumors of oral cavity are pathologically and biologically diverse group of lesions. Odontogenic tumors presenting as a combination of established entities are reported in literature. Such an occurrence can be collision or combined/hybrid odontogenic tumor. In collision tumor, two tumors of different histogenetic source (or different topographical area) develop simultaneously and then they meet in border zone [1]. The term Hybrid tumor was first used for salivary gland tumors [2]. A hybrid tumor of odontogenic apparatus is a lesion showing combined histopathological characteristics of two or more previously recognized odontogenic tumors and\ or cysts of different categories [3]. Unlike collision tumor, tumor entities in a hybrid tumor are not separated but have an identical origin within the same topographical area. …