hibernoma


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Related to hibernoma: lipoma, lipoblastoma

hibernoma

 [hi″ber-no´mah]
a rare benign tumor made up of large polyhedral cells with a coarsely granular cytoplasm, occurring on the back or around the hips.

hi·ber·no·ma

(hī'bĕr-nō'mă),
A rare type of benign neoplasm in humans, consisting of brown fat that resembles the fat in certain hibernating animals; individual tumor cells contain multiple lipid droplets.
See also: brown fat.
[L. hibernus, pertaining to winter, + G. -ōma, tumor]

hibernoma

/hi·ber·no·ma/ (-no´mah) a rare, benign, soft tissue tumor arising from vestiges of brown fat resembling that in certain hibernating animal species; it is a small, lobulated, nontender lesion usually occurring on the mediastinum or intrascapular region.

hibernoma

[hī′bərnō′mə] pl. hibernomas, hibernomata
Etymology: L, hibernus, winter; Gk, oma, tumor
a benign tumor, usually on the hips or the back, composed of fat cells that are partly or entirely of fetal origin. Also called fat cell lipoma, fetal lipoma.

hi·ber·no·ma

(hī'bĕr-nō'mă)
A rare benign neoplasm consisting of brown fat that resembles the fat in hibernating animals.
[L. hibernus, pertaining to winter, + G. -ōma, tumor]

hibernoma

a rare benign subcutaneous tumor made up of large foamy polyhedral cells distended with multiple lipoid-filled vacuoles. A fetal fat cell lipoma.
References in periodicals archive ?
Microscopically, the CT-guided biopsy showed multivacuolated and granular eosinophilic cells with small centrally located nuclei consistent with hibernoma.
In 2004, only the fourth mediastinal hibernoma was reported in the world literature [3].
El Hibernoma es un tumor derivado de vestigios del tejido adiposo pardo fetal, este tipo de tejido es una forma especializada de grasa, encontrada en los animales de hibernacion, representa aproximadamente el 1% del total de grasa corporal en el adulto.
Only 18 cases of cervical hibernoma have been reported to our knowledge in the literature 7.
3) In 1914, the actual term hibernoma was coined when Gery recognized a histologic resemblance between these tumors and the brown fat identified in hibernating animals.
Hibernomas, tumors of brown fat, show a mixture of red-brown and yellow colors.
Most Hibernoma cases, including mammary hibernomas, usually present as an asymptomatic, painless, slowly growing mass.
Hibernomas have large cells with eosinophilic cytoplasm and central nuclei with no prominent nucleoli.
Caution must be exercised in the interpretation of lipoblast- or chondroblast-like cells in chondromyxoid matrix because similar findings may be seen in myxoid liposarcoma, extraskeletal myxoid chondrosarcoma, extraskeletal chondroma, and hibernoma.
Both sporadic and familiar OS predispose the inactivation of p53 and pRb play a key role in development of OS and other tumours such as neuroendocrine tumours, and hibernomas (53,91)
Much rarer possibilities include lipomas, liposarcomas, and hibernomas.
2] "Mulberry cells" of hibernomas may appear similar to the cells seen in our tissue biopsy, but hibernomas have S100-positive cytoplasmic rimming, clear lipid droplets, and present less commonly in the retroperitoneum.