seminoma

(redirected from seminomas)
Also found in: Dictionary, Thesaurus, Encyclopedia.
Related to seminomas: testicular cancer, testicular tumor

seminoma

 [sem″ĭ-no´mah]
a malignant tumor of the testis thought to arise from primordial germ cells of the sexually undifferentiated embryonic gonad.

sem·i·no·ma

(sem'i-nō'mă),
A radiosensitive malignant neoplasm usually arising from germ cells in the testis of young male adults that metastasizes to the paraortic lymph nodes; a counterpart of dysgerminoma of the ovary.
[L. semen, seed (semen) + G. -oma, tumor]

seminoma

/sem·i·no·ma/ (-no´mah) a radiosensitive, malignant neoplasm of the testis, thought to be derived from primordial germ cells of the sexually undifferentiated embryonic gonad. Cf. germinoma.
classical seminoma  the most common type, composed of well-differentiated sheets or cords of polygonal or round cells (seminoma cells).
ovarian seminoma  dysgerminoma.
spermatocytic seminoma  a less malignant form characterized by cells resembling maturing spermatogonia with filamentous chromatin.

seminoma

(sĕm′ə-nō′mə)
n. pl. semino·mas or semino·mata (-mə-tə)
A malignant tumor of the testis arising from sperm-forming tissue.

seminoma

[sem′inō′mə] pl. seminomas, seminomata
Etymology: L, semen + oma, tumor
a malignant tumor of the testis. It is the most common testicular tumor and is believed to arise from the seminiferous epithelium of the mature or maturing testis. The two types are classic, or typical, and spermatocytic; anaplastic seminoma is a variant of the classic type. Compare dysgerminoma.
enlarge picture
Seminoma

seminoma

Lance Armstrong tumor Urology A testicular germ-cell neoplasm and most common tumor of ♂ < age 40 Clinical Mass, ± pain Management Excision, RT Prognosis ± 90% 5-yr survival if treated early. See Anaplastic seminoma, Germ cell tumor, Spermatocytic seminoma.

sem·i·no·ma

(sem'i-nō'mă)
A radiosensitive malignant neoplasm usually arising from germ cells in the testis of young male adults that metastasizes to the paraortic lymph nodes; a counterpart of dysgerminoma of the ovary.
[L. semen, seed (semen) + G. -oma, tumor]

seminoma

A malignant tumour of the testicle, composed of cells resembling primitive germ cells. The seminoma is highly sensitive to radiotherapy.

Chevassu,

Maurice, French physician, 1877–.
Chevassu tumor - testicular germ-cell tumor affecting men over 30 years of age. Synonym(s): seminoma

seminoma

tumor of the testis thought to arise from basal spermatogonia. They are common in older dogs and occur often in cryptorchid testes. Seminomas also occur in the male of other domestic species.
References in periodicals archive ?
Histologic Features of Other Types of Intratubular Germ Cell Neoplasia: Intratubular Seminoma and Intratubular Nonseminoma
Standard treatments of seminomas are radical orchiectomy, follow-up, adjuvant radiotherapy or chemotherapy (2).
In this study, one case of non-Hodgkin lymphoma (NHL) and spennatocytic seminoma was seen in elderly, five cases of pure seminoma occurred in the 3rd decade.
Seminoma on ectopic testis associated with renal agenesis.
Covariates in these models were age at orchiectomy, institution at orchiectomy, year of orchiectomy, and depending on orchiectomy pathology, overall stage at presentation and pure embryonal carcinoma (EC) in orchiectomy pathology for NSGCT, and primary tumour size for seminoma.
Although uncommon, seminomas have occurred in several avian species in the orders Galliformes (chickens, guinea fowl, turkey, quail), Columbiformes (pigeons, doves), Anseriformes (ducks, swans), Psittaciformes (parrots, cockatiels, budgerigars [Melopsittacus undulatus]), and Passeriformes (arrow-marked babbler [Turdoides jardineii]).
Los tumores mas frecuentes en testiculos son: tumor de celulas de Sertoli (TCS), tumor de celulas intersticiales (o tumor de celulas de Leydig) y Seminoma (tumor de celulas germinales o tumor de espermatogonias) (Fogel, 2009; Mialot, 2012).
It has been reported that magnetic resonance imaging (MRI) can distinguish between seminomas and nonseminomas; however, this is not clinically relevant since orchiectomy is performed as primary treatment [11, 12].
Key Words: Seminoma, non-seminoma, male fertility, cryptochordism.
The most common primary testicular neoplasm is seminoma (Ladd et al.
Histopathological examination of both testes showed the tumours to be poorly differentiated seminomas (Fig.
Germ cell tumors can be classified as seminomas and nonseminomas.