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Struma Ovarii of Ovary (40X)
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Struma Ovarii of Ovary (40X)

There are several thyroid follicles containing eosinophlic, acellular colloid.
The follicular epithelium has small, round dark nuclei and modest amounts of eosinophilic cytoplasm.
No nuclear atypia or mitotic activity is seen.
These follicles are indistinguishable from normal thyroid.
(Description By:Melinda Sanders, M.D. )
(Image Contrib. by:Melinda Sanders, M.D. UCHC )
Struma Ovarii (Monodermal Teratoma)
Etiology

unknown
Pathogenesis

proliferation of a meiotic germ cell,
Epidemiology

reproductive age women
General Gross Description

smooth external surface
cut surfaces will be meaty and red brown, resembling the thyroid gland
General Microscopic Description

follicles indistinguishable from normal thyroid
Clinical Correlation
reproductive age women with unilateral mass (10-15% bilateral)
generally incidental finding
may be functional
References

Cotran RS, Kumar V, Robbins SL: Robbins Pathologic Basis of Disease. 5th ed. Philadelphia, W.B. Saunders, 1994, pp. 1072-3
Struma Ovarii (Monodermal Teratoma)
Synopsis by: Melinda Sanders M.D. (T87000M90900)[273]
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