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Dysgerminoma (External View)
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Dysgerminoma (External View)

This is a cut surface of the ovary.
The arrows point to the fallopian tube.
The normal cut surface is replaced by a reddish tan neoplasm with focal hemorrhage.
A small area of cystic degeneration is also seen adjacent to hemorrhage.
(Description By:Melinda Sanders, M.D. )
(Image Contrib. by: )
Dysgerminoma
Etiology

Unknown
Pathogenesis

Unknown.,
Epidemiology

Usually teenage girls or young women
2% ovarian neoplasms
1/2 of malignant germ cell neoplasms
Gonadal dysgenesis may be setting for some
General Gross Description

Usually unilateral and confined to ovary.
Homogenous tan, fleshy lesion
Usually without hemorrhage or necrosis
General Microscopic Description

Identical to seminoma
Cells in nests separated by delicate fibrovascular septae
Septae may contain lymphocytes or even granuloma
Cells have round to oval nuclei, relatively clear cytoplasm, and well defined cell borders.
Clinical Correlation

If confined to the ovary and <10 cms. cure can be achieved with surgery alone
Exquisitely radiosensitive if metastatic.
References

Cotran RS, Kumar V, Robbins SL: Robbins Pathologic Basis of Disease. 5th ed. Philadelphia, W.B. Saunders, 1994, pp. 1071-1073.
Dysgerminoma
Synopsis by: Melinda Sanders M.D. (T87000M90603)[271]
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