Ovary - nontumor - Rete ovarii cyst

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Ovary - nontumor

Non-neoplastic cysts/other

Rete ovarii cyst

Reviewer: Shahid Islam, M.D., (see Reviewers page)
Revised: 5 June 2012, last major update May 2012
Copyright: (c) 2002-2012, PathologyOutlines.com, Inc.

General
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● Also called adenoma of rete ovarii
● Rare; mean age 59 years

Case reports
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● 11 year old girl (J Pediatr Surg 2005;40:e17)

Gross description
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● Mean 9 cm, usually hilar

Micro description
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● Tubulopapillary proliferations of columnar cells with clear cytoplasm; stroma has extensive polygonal, Leydig-like cells
● Rete and hilar mesonephric remnants found in vicinity of the lesion

Micro images
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A small cyst in the hilus is lined by cuboidal epithelial cells, Wolffian remnants are visible below

Positive stains
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● CAM 5.2, vimentin, EMA, progesterone receptor

Additional references
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● Int J Gynecol Pathol 1988;7:330, Hum Pathol 1997;28:1428

End of Ovary - nontumor > Non-neoplastic cysts/other > Rete ovarii cyst

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