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. 1970 Mar;24(1):168–186. doi: 10.1038/bjc.1970.20

Effect of 9,10-Dimethyl-1,2-Benzanthracene on the Mouse Ovary. Ovarian Tumorigenesis

T Krarup
PMCID: PMC2008519  PMID: 5428612

Abstract

Groups of immature and mature mice were treated once with DMBA by oral or intraperitoneal route, and the subsequent bilateral sequence of ovarian changes leading to the development of unilateral granulosa cell tumour was studied.

Early post-treatment changes included disappearance of oocytes and follicles as well as increase of the stroma mass. The neoplastic development was closely correlated to the rate of oocyte disappearance. The faster oocytes were eliminated, the earlier tumours appeared. The early post-treatment changes led to a stage of potential preneoplasia, characterized by diffuse luteinization of the ovarian parenchyma. In some preneoplastic ovaries the luteinized tissue underwent neoplastic transformation and developed into invasive luteoma. In other preneoplastic ovaries foci of granulosa-like tumour cells appeared in the luteinized tissue, representing the stage of microscopic granulosa cell tumour. However, such microtumours could also develop within pre-existing luteomata. Autoradiography after injection of thymidine-3H suggested that the granulosa-like tumour cells developed as the result of undifferentiated proliferation of luteinized cells.

So far the pathological ovarian evolution occurred bilaterally as well as unilaterally. However, when a microscopic granulosa cell tumour by further growth became a macroscopic granulosa cell tumour the contralateral ovary invariably atrophied. This ultimate unilateral development coincided with a continuous production of oestrogen by the granulosa cell tumour. The reason for the contralateral atrophy is discussed in relation to the influence of the hormonal balance on ovarian tumorigenesis.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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