Biomaterial Database

Cytogenetics, ploidy and differentiation of human testicular, ovarian and extragonadal germ cell tumours. 1990

J W Oosterhuis, and S M Castedo, and B de Jong

Department of Pathology, University of Groningen, Netherlands.

Data from cytogenetics of testicular, ovarian and extragonadal germ cell tumours indicate that the group of germ cell tumours for which Skakkebaek proposed the name gonocytoma (seminoma, dysgerminoma and germinoma) is characterized by the presence of isochromosome 12p. The (dysplastic) gonocytes from which these tumours are derived are prone to polyploidization, especially in the gonads. There is evidence that non-seminomatous germ cell tumours in the testis may evolve through a (subclinical?) gonocytoma stage by loss of chromosomes. Since gonocytomas have already acquired the i(12p) marker, evolution of non-seminomatous germ cell tumours from gonocytomas would explain the presence of i(12p) in non-seminomatous germ cell tumours of the adult testis. A similar evolution may account for the presence of i(12p) in testicular type non-seminomatous germ cell tumours occurring in the ovary and extragonadally.

UI	MeSH Term	Description	Entries
D008297	Male		Males
D009373	Neoplasms, Germ Cell and Embryonal	Neoplasms composed of primordial GERM CELLS of embryonic GONADS or of elements of the germ layers of the EMBRYO, MAMMALIAN. The concept does not refer to neoplasms located in the gonads or present in an embryo or FETUS.	Germ Cell Cancer,Germ Cell Tumor,Neoplasms, Embryonal and Mixed,Cancer, Embryonal,Cancer, Embryonal and Mixed,Embryonal Neoplasms,Germ Cell Neoplasms,Germ Cell and Embryonal Neoplasms,Germ Cell and Embryonic Neoplasms,Neoplasms, Embryonal,Neoplasms, Germ Cell,Neoplasms, Germ Cell and Embryonic,Cancer, Germ Cell,Cancers, Embryonal,Cancers, Germ Cell,Embryonal Cancer,Embryonal Cancers,Embryonal Neoplasm,Germ Cell Cancers,Germ Cell Tumors,Neoplasm, Embryonal,Tumor, Germ Cell,Tumors, Germ Cell
D010051	Ovarian Neoplasms	Tumors or cancer of the OVARY. These neoplasms can be benign or malignant. They are classified according to the tissue of origin, such as the surface EPITHELIUM, the stromal endocrine cells, and the totipotent GERM CELLS.	Cancer of Ovary,Ovarian Cancer,Cancer of the Ovary,Neoplasms, Ovarian,Ovary Cancer,Ovary Neoplasms,Cancer, Ovarian,Cancer, Ovary,Cancers, Ovarian,Cancers, Ovary,Neoplasm, Ovarian,Neoplasm, Ovary,Neoplasms, Ovary,Ovarian Cancers,Ovarian Neoplasm,Ovary Cancers,Ovary Neoplasm
D011003	Ploidies	The degree of replication of the chromosome set in the karyotype.	Ploidy
D002471	Cell Transformation, Neoplastic	Cell changes manifested by escape from control mechanisms, increased growth potential, alterations in the cell surface, karyotypic abnormalities, morphological and biochemical deviations from the norm, and other attributes conferring the ability to invade, metastasize, and kill.	Neoplastic Transformation, Cell,Neoplastic Cell Transformation,Transformation, Neoplastic Cell,Tumorigenic Transformation,Cell Neoplastic Transformation,Cell Neoplastic Transformations,Cell Transformations, Neoplastic,Neoplastic Cell Transformations,Neoplastic Transformations, Cell,Transformation, Cell Neoplastic,Transformation, Tumorigenic,Transformations, Cell Neoplastic,Transformations, Neoplastic Cell,Transformations, Tumorigenic,Tumorigenic Transformations
D005260	Female		Females
D006801	Humans	Members of the species Homo sapiens.	Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D013736	Testicular Neoplasms	Tumors or cancer of the TESTIS. Germ cell tumors (GERMINOMA) of the testis constitute 95% of all testicular neoplasms.	Cancer of Testis,Cancer of the Testes,Testicular Cancer,Testicular Neoplasm,Testicular Tumor,Testis Cancer,Cancer of the Testis,Neoplasms, Testicular,Neoplasms, Testis,Testicular Tumors,Testis Neoplasms,Tumor of Rete Testis,Cancer, Testicular,Cancer, Testis,Cancers, Testicular,Cancers, Testis,Neoplasm, Testicular,Neoplasm, Testis,Rete Testis Tumor,Rete Testis Tumors,Testicular Cancers,Testis Cancers,Testis Neoplasm,Testis Tumor, Rete,Testis Tumors, Rete,Tumor, Testicular,Tumors, Testicular