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- W1520032679 abstract "Experimental tumors, growths both morphologically and functionally comparable to androblastomas or arrhenoblastomas, can be produced in fowl by destruction of the functional left ovary and resultant overgrowth of the vestigial right gonad. However, identical growths frequently result when radioactive colloidal chromic phosphate is injected into the left ovaries of hens and rarely when the testes of roosters are traumatized or treated with caustic chemicals. The growths which result when ovarian or testicular tissue is transplanted into the spleen or thymus of castrated rats and the tubular complexes which form spontaneously in the ovaries of aged rats are strikingly similar to the lesions in the birds. Both the rodent and the avian gonadal overgrowths resemble certain spontaneous tumors of the dog's testis and the human ovary or testis. The homology of Sertoli to granulosa cells and of theca-lutein elements to Leydig cells has been recognized by experimental and comparative embryologists. In the light of these homologies, the tumors can be viewed as neoplasms made up of cells which have retained their embryonic bipotential capacities, and which can differentiate toward elements resembling nongerminal epithelial and supporting structures of the gonad of either sex. This concept is supported by evidence that nongerminal cells capable of division and differentiation exist in the adult gonad of both sexes and that in experimental tumorigenesis it is these cells which participate rather than vestigial structures or embryonic rests. Endocrinologic activity of the tumor depends on the types, relative proportions, and degrees of differentiation of the hormonesecreting cells, which vary considerably from neoplasm to neoplasm. Hormonal secretion alone does not constitute an adequate basis for nomenclature. The common histogenesis of granulosa cell tumors, arrhenoblastomas, lutcomas, and Leydig cell tumors of the ovary, as well as of the Sertoli cell tumors (tubular androblastomas), diffuse androblastomas, and granulosa and interstitial cell tumors of the testis is emphasized. A generic designation for the entire group, which would emphasize the common histogenesis, would be desirable, and the old term “gynandroblastoma” is suggested. “Androblastoma” and “gynoblastoma” are proposed as names for the subtypes, depending upon whether the direction of differentiation is toward tubules and interstitial cells or toward stroma and follicular complexes, and, if needed, the adjectival designations of “masculinizing” or “femininizing” could be used to indicate functional activity." @default.
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- W1520032679 date "1960-05-01" @default.
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- W1520032679 title "Comparative pathology of experimental and spontaneous androblastomas and gynoblastomas of the gonads" @default.
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- W1520032679 doi "https://doi.org/10.1016/0002-9378(60)90693-1" @default.
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