ameloblastoma


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ameloblastoma

 [ah-mel″o-blas-to´mah]
a locally invasive, highly destructive tumor of the jaw; called also adamantinoma.
pituitary ameloblastoma craniopharyngioma.

am·e·lo·blas·to·ma

(am'ĕ-lō-blas-tō'mă),
A benign odontogenic epithelial neoplasm that histologically mimics the embryonal enamel organ but does not differentiate from it to the point of forming dental hard tissues; it behaves as a slowly growing expansile radiolucent tumor, occurs most commonly in the posterior regions of the mandible and tends to recur if inadequately excised.
[ameloblast + G. -oma, tumor]

ameloblastoma

/am·e·lo·blas·to·ma/ (-blas-to´mah) a usually benign but locally invasive neoplasm of tissue of the type characteristic of the enamel organ, but which does not differentiate to the point of enamel formation.
melanotic ameloblastoma  melanotic neuroectodermal tumor.
pituitary ameloblastoma  craniopharyngioma.

ameloblastoma

[am′əlōblastō′mə]
Etymology: OFr, amel + Gk, blastos, germ, oma
a rare, highly destructive, benign, rapidly growing tumor of the jaw. Also called adamantinoma, adamantoblastoma, epithelioma adamantinum.
enlarge picture
Ameloblastoma

ameloblastoma

A locally aggressive but almost invariably benign tumour that arises from the odontogenic epithelium in a fibrous stroma of the mandible or maxilla, which is more common in males in their 40s.
 
Management
Wide local excision; may recur.

ameloblastoma

Adamantinoma A locally-aggressive, but almost invariably benign tumor that arises from the odontogenic epithelium in a fibrous stroma of the mandible or maxilla, which is most common in ♂ in the 4th decade Treatment Wide local excision; may recur

am·e·lo·blas·to·ma

(am'el'ō-blas-tō'mă)
A benign odontogenic epithelial neoplasm; it behaves as a slowly growing expansile radiolucent tumor, occurs most commonly in the posterior regions of the mandible, and has a marked tendency to recur if inadequately excised.
[ameloblast + G. -oma, tumor]

ameloblastoma

A BENIGN tumour arising from the tissue that gives rise to the tooth internal lining. Ameloblastomas usually occur in the lower jaw (mandible) and are also known as adamantinomas.

am·e·lo·blas·to·ma

(am'el'ō-blas-tō'mă)
Benign odontogenic epithelial neoplasm that histologically mimics the embryonal enamel organ but does not differentiate from it to the point of forming dental hard tissues; behaves as a slowly growing expansile radiolucent tumor; occurs most commonly in the posterior regions of the mandible and tends to recur if inadequately excised.
[ameloblast + G. -oma, tumor]

ameloblastoma (am´əlōblastō´mə),

n an epithelial neoplasm with a basic structure resembling the enamel organ and suggesting derivation from ameloblastic cells. It is usually benign but aggressive. Also called
adamantinoblastoma or
adamantinoma.
ameloblastoma, acanthomatous,
n a type that differs from the simple form in that the central cells within the cell nests are squamous and may be keratinized rather than stellate. The peripheries of the cell nests are composed of ameloblastic cells. See also ameloblastoma.

ameloblastoma

a locally invasive, highly destructive tumor of the jaw consisting of proliferating odontogenic epithelium in a fibrous stroma.

pituitary ameloblastoma
References in periodicals archive ?
8] The peripheral odontogenic fibroma must be differentiated histologically from POF, which is a reactive lesion, and from the peripheral ameloblastoma and the calcifying epithelial odontogenic tumor which are benign odontogenic tumors.
The most common site of occurrence of follicular ameloblastoma was in the angle and ramus of the mandible .
Since DC usually presents as a unilocular, well-defined radiolucent lesion without prominent clinical symptoms, differential diagnosis should include the radicular cyst, odontogenic keratocyst, ameloblastoma, odontogenic fibromyxoma and odontoma (4, 9).
En la Universidad de Sichuan, China, se realizo un estudio retrospectivo a 52 anos con un universo de 1642 casos, donde se reporto que el TOB mas frecuente fue ameloblastoma (40,3%), seguido del TOQQ (35,8%).
They can be associated with an impacted tooth, mimicking a dentigerous cyst, and can sometimes be complex with multiple septations, making it difficult to differential OKC from ameloblastoma.
For the multilocular lesions in the mandible ramus, differential diagnoses of SBC were: ameloblastoma, odontogenic keratocyst, odontogenic myxoma, and central giant cell lesion.
Ameloblastoma, an odontogenic tumour, can be readily differentiated by radiography.
La importancia de evaluar la impactacion, retencion e inclusion radica en que e, diente mantiene su saco folicular, cuyo epitelio conserva la capacidad de diferenciarse y que podria progresar hacia lesiones tumorales (formacion de quistes dentigeros, queratoquiste odontogenico y ameloblastoma, entre otros).
It was diagnosed as ameloblastoma, a benign tumor that develops most often in the jaw near the molars.
Objective: To determine calretinin expression by immunohistochemistry in ameloblastoma and keratocystic odontogenic tumors (KCOT) and to document the use of calretinin as a differentiating marker between the two lesions.
Ameloblastic carcinoma is a rare type of ameloblastoma that has received little mention in the literature.
The preoperative diagnosis consisted of traumatic bone cyst, central giant cell granuloma, or ameloblastoma.