seminoma

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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

(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

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
References in periodicals archive ?
Sarcomatous change in spermatocytic seminoma is characterized by the presence of 2 components.
Spermatocytic seminoma is most commonly misinterpreted as typical seminoma, embryonal carcinoma, or lymphoma.
Relatively monomorphic examples of spermatocytic seminoma may particularly be misdiagnosed because they have a sheetlike arrangement of large tumor cells with round nuclei, prominent nucleoli, and frequent mitotic figures but they are negative for leukocyte commen antigen.
Embryonal carcinoma lacks the 3 different types of cells described in spermatocytic seminoma. Also, the nuclei are much more crowded in embryonal carcinoma.
The gain of chromosome 9 appears to be a consistent finding in all spermatocytic seminomas, which is not found in classic seminomas.
Spermatocytic seminomas rarely metastasize and hence orchidectomy alone is indicated for treatment.
Spermatocytic seminoma is a rare testicular tumor that poses a diagnostic challenge.
Spermatocytic seminoma: clinicopathological study of 22 cases.
Spermatocytic seminoma: a clinicopathologic study of 79 cases.
Reactivity ofgerm cell maturation stage-specific markers in spermatocytic seminoma: diagnostic and etiological implications.
Placental-like alkaline phosphatase and DNA flow cytometry in spermatocytic seminoma. Cancer 1992;69:993-996.