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| **Cuboidal/flat epithelium.<ref>{{cite journal |author=Auersperg N, Wong AS, Choi KC, Kang SK, Leung PC |title=Ovarian surface epithelium: biology, endocrinology, and pathology |journal=Endocr. Rev. |volume=22 |issue=2 |pages=255–88 |year=2001 |month=April |pmid=11294827 |doi= |url=http://edrv.endojournals.org/cgi/pmidlookup?view=long&pmid=11294827}}</ref> | | **Cuboidal/flat epithelium.<ref>{{cite journal |author=Auersperg N, Wong AS, Choi KC, Kang SK, Leung PC |title=Ovarian surface epithelium: biology, endocrinology, and pathology |journal=Endocr. Rev. |volume=22 |issue=2 |pages=255–88 |year=2001 |month=April |pmid=11294827 |doi= |url=http://edrv.endojournals.org/cgi/pmidlookup?view=long&pmid=11294827}}</ref> |
| **Has ovarian stroma underneath. | | **Has ovarian stroma underneath. |
| **Nobnail morphology (free surface larger than basement membrane surface).<ref>ALS. 5 February 2009.</ref> | | **Hobnail morphology (free surface larger than basement membrane surface).<ref>ALS. 5 February 2009.</ref> |
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| Ovarian surface vs. mesothelium: | | Ovarian surface vs. mesothelium: |
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| *[[AKA]] ''[[peritoneal inclusion cyst]]''.{{fact}} | | *[[AKA]] ''[[peritoneal inclusion cyst]]''.{{fact}} |
| *[[AKA]] ''cortical inclusion cyst''.<ref name=pmid11207821>{{Cite journal | last1 = Feeley | first1 = KM. | last2 = Wells | first2 = M. | title = Precursor lesions of ovarian epithelial malignancy. | journal = Histopathology | volume = 38 | issue = 2 | pages = 87-95 | month = Feb | year = 2001 | doi = | PMID = 11207821 }}</ref>{{fact}} | | *[[AKA]] ''cortical inclusion cyst''.<ref name=pmid11207821>{{Cite journal | last1 = Feeley | first1 = KM. | last2 = Wells | first2 = M. | title = Precursor lesions of ovarian epithelial malignancy. | journal = Histopathology | volume = 38 | issue = 2 | pages = 87-95 | month = Feb | year = 2001 | doi = | PMID = 11207821 }}</ref>{{fact}} |
| | *[[AKA]] ''surface epithelial inclusion cyst''. |
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| ===General=== | | ===General=== |
| *May be found incidentally, e.g. during C-section. | | *May be found incidentally, e.g. during C-section. |
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| DDx: | | DDx: |
| *[[Serous cystadenoma of the ovary]]. | | *[[Serous cystadenoma of the ovary]] - must be >=1 cm.<ref name=Ref_GP384>{{Ref GP|384}}</ref> |
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| Image: | | Image: |
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| ==Pregnancy luteoma== | | ==Pregnancy luteoma== |
| *[[AKA]] ''luteoma of [[pregnancy]]''. | | *[[AKA]] ''luteoma of [[pregnancy]]''. |
| ===General===
| | {{Main|Pregnancy luteoma}} |
| *Tumour of pregnancy.
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| *Benign.
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| *Regress after pregnancy; thus, conservative management.<ref name=pmid21144088>{{Cite journal | last1 = Masarie | first1 = K. | last2 = Katz | first2 = V. | last3 = Balderston | first3 = K. | title = Pregnancy luteomas: clinical presentations and management strategies. | journal = Obstet Gynecol Surv | volume = 65 | issue = 9 | pages = 575-82 | month = Sep | year = 2010 | doi = 10.1097/OGX.0b013e3181f8c41d | PMID = 21144088 }}</ref>
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| Clinical:
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| *Increased serum testosterone.<ref name=pmid15782020>{{Cite journal | last1 = Kao | first1 = HW. | last2 = Wu | first2 = CJ. | last3 = Chung | first3 = KT. | last4 = Wang | first4 = SR. | last5 = Chen | first5 = CY. | title = MR imaging of pregnancy luteoma: a case report and correlation with the clinical features. | journal = Korean J Radiol | volume = 6 | issue = 1 | pages = 44-6 | month = | year = | doi = | PMID = 15782020 }}</ref>
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| *Increased CA125.<ref name=pmid10546765>{{Cite journal | last1 = Rodriguez | first1 = M. | last2 = Harrison | first2 = TA. | last3 = Nowacki | first3 = MR. | last4 = Saltzman | first4 = AK. | title = Luteoma of pregnancy presenting with massive ascites and markedly elevated CA 125. | journal = Obstet Gynecol | volume = 94 | issue = 5 Pt 2 | pages = 854 | month = Nov | year = 1999 | doi = | PMID = 10546765 }}
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| </ref><ref name=pmid25785161>{{Cite journal | last1 = Wang | first1 = Y. | last2 = Zhou | first2 = F. | last3 = Qin | first3 = JL. | last4 = Qian | first4 = ZD. | last5 = Huang | first5 = LL. | title = Pregnancy luteoma followed with massive ascites and elevated CA125 after ovulation induction therapy: a case report and review of literatures. | journal = Int J Clin Exp Med | volume = 8 | issue = 1 | pages = 1491-3 | month = | year = 2015 | doi = | PMID = 25785161 }}</ref>
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| ===Gross===
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| *Solid.
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| *Yellow.
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| Images:
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| *[http://www.flickr.com/photos/78147607@N00/4730745138 Pregnancy luteoma (flickr.com/euthman)].
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| *[http://www.flickr.com/photos/euthman/4730754894/in/photostream/ Pregnancy luteoma (flickr.com/euthman)].
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| ===Microscopic===
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| Features:
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| *Sheets of cells.
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| *Cells with eosinophilic cytoplasm, round nuclei and prominent [[nucleoli]].
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| DDx:
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| *[[Leydig cell tumour]].
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| Images:
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| *[http://www.webpathology.com/image.asp?case=522&n=1 Pregnancy luteoma - low mag. (webpathology.com)].
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| *[http://www.webpathology.com/image.asp?n=2&Case=522 Pregnancy luteoma - high mag. (webpathology.com)].
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| =Ovarian tumours= | | =Ovarian tumours= |