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A benign tumor composed of mucinous connective tissue.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.



a benign tumor made up of connective tissue and containing a large amount of mucus. Myxomas arise from residues of embryonic (mucous) connective tissue or from mucous transformation of fibromas or lipomas. They may be found in all organs, particularly in the extremities, subcutaneous tissue, and mesentery. Myxomas are treated by surgery; they may recur if not completely excised.

The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.
References in periodicals archive ?
Peripheral odontogenic myxoma: A review of the literature and report of two cases.
Odontogenic myxoma: case report with reconstructive considerations.
The radiographic feature of the present case was well-defined, multilocular radiolucency with several straight septa that resembled odontogenic myxoma.
This is different for ameloblastoma, odontogenic myxoma or central giant cell lesion--most likely they show cortical rupture and are sensitive to palpation.
Odontogenic myxomas are rare, benign neoplasms apparently arising from the mesenchymal portion of the tooth-forming unit known as the dental papillae/dental sac.
However when the ameloblastoma shows a typical expansile multilocular aspect, the differential diagnosis can include a variety of odontogenic or non-odontogenic lesions with similar characteristics like odontogenic keratocysts, aneurysmal bone cysts, adenomatoid odontogenic tumors, odontogenic myxomas, and giant cell central lesions.
In odontogenic myxoma cases, intense reactivity to [alpha]SMA was detected in the population of stellate and spindle cells, in about 85% of the cells per high power field.
The current knowledge of the odontogenic myxoma (OM) still has significant gaps.
The differential diagnosis of a POF includes a fibrous epulis and odontogenic gingival epithelial hamartoma, whereas for a COF one needs to consider hyperplastic dental follicles, myxofibroma, desmoplastic fibroma, odontogenic myxoma, intraosseous neurofibroma, and possibly carcinoma.
The radiographic differential diagnosis included odontogenic myxoma, desmoplastic fibroma, and myofibromatosis.
It includes ameloblastoma, odontogenic myxoma, adenomatoid odontogenic tumor, calcifying epithelial odontogenic tumor (Pindborg tumor), calcifying odontogenic cyst (Gorlin cyst), ameloblastic fibroma, ameloblastic fibro-odontoma, compound odontoma, and complex odontoma.
Histologic examination identified the mass as an odontogenic myxoma. Clinically, the patient remained asymptomatic after 2 years.