mesenchymoma


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mesenchymoma

 [mes″eng-ki-mo´mah]
a mixed mesenchymal tumor composed of two or more cellular elements that are not commonly associated, exclusive of fibrous tissue.

mes·en·chy·mo·ma

(mes'eng-kī-mō'mă),
Rarely used term for a neoplasm in which there is a mixture of mesenchymal derivatives, other than fibrous tissue. A benign mesenchymoma may contain foci of vascular, muscular, adipose, osteoid, osseous, and cartilaginous tissue; such neoplasms are sometimes classed under a compounded name, for example, angioleiomyolipoma, and the like, but the broader term may be preferred. A malignant mesenchymoma may also occur as a similar mixture of two or more types of mesenchymal cells that are malignant (other than fibrous tissue cells).

mesenchymoma

/mes·en·chy·mo·ma/ (mez″en-ki-mo´mah) a mixed mesenchymal tumor composed of two or more cellular elements not commonly associated, exclusive of fibrous tissue.

mesenchymoma

[mes′engkimō′mə]
Etymology: Gk, mesos + enchyma, infusion, oma, tumor
a mixed mesenchymal neoplasm composed of two or more cellular elements that are not usually associated and fibrous tissue. See also benign mesenchymoma, malignant mesenchymoma.

mesenchymoma

A tumor that contain 2 or more mesenchymal elements in addition to fibroblasts; the term has specific significance in each affected organ Cartilage Vascular hamartoma, cartilaginous hamartoma A benign chest wall tumor of infancy Liver Hepatic mesenchymoma is a large, aggressive embryonal or 'primitive' sarcoma of the pediatric liver with a median survival of < 1 yr, characterized by necrosis, hemorrhage, cystic degeneration, atypical fibroblasts, and exuberant mitotic activity, entrapping hyperplastic bile duct-like structures Muscle Ecto-mesenchymoma An embryonal rhabdomyosarcoma with ganglionic differentiation. See Triton tumor.

mes·en·chy·mo·ma

(mes'eng-kī-mō'mă)
Neoplasm in which there is a mixture of mesenchymal derivatives, other than fibrous tissue. A benign mesenchymoma may contain foci of vascular, muscular, adipose, osteoid, osseous, and cartilaginous tissue. A malignant mesenchymoma may also occur as a similar mixture of two or more types of mesenchymal cells that are malignant.

mesenchymoma

a mixed mesenchymal tumor composed of two or more cellular elements that are not commonly associated, exclusive of fibrous tissue.
References in periodicals archive ?
Mesenchymoma of the liver in childhood: Five-year survival after combined-modality treatment.
Synonyms for hemangioma are benign mesenchymoma, infiltrating angiolipoma, angiofibrolipoma, hemartoma, and cavernous hemangioma.
Pathogenesis of FML is uncertain; some authors suggest that it is a hamartoma or mesenchymoma.
It was originally described as a mesenchymoma, but because it is nonneoplastic, the term hamartoma is more appropriate.
Traditionally, the term mesenchymoma is reserved for a tumor, whether neoplastic or hamartomatous, composed of 2 or more mesenchymal elements other than fibrous tissue.