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These rare forms of teratoma with malignant transformation may contain elements of somatic (not germ cell) malignancy such as leukemia, carcinoma, or sarcoma. [35] A teratoma may contain elements of other germ cell tumors, in which case it is not a pure teratoma, but rather is a mixed germ cell tumor and is malignant.
An odontogenic tumor is a neoplasm of the cells or tissues that initiate odontogenic processes. Examples include: Adenomatoid odontogenic tumor; Ameloblastic fibroma; Ameloblastic fibro-odontoma; Ameloblastoma, a type of odontogenic tumor involving ameloblasts; Ameloblastic fibrosarcoma; Calcifying cystic odontogenic tumor; Calcifying ...
The growth pattern of the lesion is very characteristic from which a diagnosis can be made as there is growth and spread both forward and backward along the medullary cavity with little expansion. No resorption of teeth or inferior dental canal and minimal displacement of teeth is seen.
The odontogenic myxoma is an uncommon benign odontogenic tumor arising from embryonic connective tissue associated with tooth formation. [1] As a myxoma, this tumor consists mainly of spindle shaped cells and scattered collagen fibers distributed through a loose, mucoid material. [2]
Specifically, it is a dental hamartoma, meaning that it is composed of normal dental tissue that has grown in an irregular way. It includes both odontogenic hard and soft tissues. [1] As with normal tooth development, odontomas stop growing once mature which makes them benign. [6] The average age of people found with an odontoma is 14. [7]
The calcifying epithelial odontogenic tumor (CEOT), also known as a Pindborg tumor, is an odontogenic tumor first recognized by the Danish pathologist Jens Jørgen Pindborg in 1955. [1] It was previously described as an adenoid adamantoblastoma , unusual ameloblastoma and a cystic odontoma . [ 1 ]
On radiographs, the adenomatoid odontogenic tumor presents as a radiolucency (dark area) around an unerupted tooth extending past the cementoenamel junction. It should be differentially diagnosed from a dentigerous cyst and the main difference is that the radiolucency in case of AOT extends apically beyond the cementoenamel junction.
Epulis (Greek: ἐπουλίς; plural epulides) is any tumor-like enlargement (i.e. lump) situated on the gingival or alveolar mucosa. [1] [2] The word literally means "(growth) on the gingiva", [3] [4] and describes only the location of the mass and has no further implications on the nature of the lesion. [5]