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| </gallery> | | </gallery> |
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| If found, check if the pregnancy is molar, as evidenced by: | | If found, check if the pregnancy is molar. {{Further|Molar pregnancy|linebreak=no}} |
| *Heterogeneity in villous size with one one hand large, hydropic villi, and small, fibrotic villi on the other.
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| *Enlarged villi being irregularly shaped with scalloped borders and trophoblastic pseudoinclusions, and sometimes cistern formation
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| *Trophoblastic hyperplasia
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| <gallery mode=packed heights=220>
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| File:Partial Hydatidiform Mole (7740173684)|Molar pregnancy: Mildly hydropic villus with scalloped margins and moderate trophoblastic proliferation without cytologic atypia.
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| File:Partial Hydatidiform Mole (7740173876)|Molar pregnancy: Closer view of invaginations in a mildly hydropic villus.
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| File:Partial Hydatidiform Mole (7740173256)|Molar pregnancy, as evidenced by prominent traophblastic hyperplasia.
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| </gallery>
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| In case of molar pregnancy, perform immunohistochemistry for p57. p57 negative cases with molar morphology are diagnosed as complete hydatidiform moles without genotyping. p57+ cases should be subjected to genotyping.<ref name="BanetDeScipio2013">{{cite journal|last1=Banet|first1=Natalie|last2=DeScipio|first2=Cheryl|last3=Murphy|first3=Kathleen M|last4=Beierl|first4=Katie|last5=Adams|first5=Emily|last6=Vang|first6=Russell|last7=Ronnett|first7=Brigitte M|title=Characteristics of hydatidiform moles: analysis of a prospective series with p57 immunohistochemistry and molecular genotyping|journal=Modern Pathology|volume=27|issue=2|year=2013|pages=238–254|issn=0893-3952|doi=10.1038/modpathol.2013.143}}</ref>
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| If no embryonic tissue or villi can be histologically identified, submit any residual blood clots, as well as any additional pieces from macroscopically suspended portions of the tubal wall.<ref name=stora/> | | If no embryonic tissue or villi can be histologically identified, submit any residual blood clots, as well as any additional pieces from macroscopically suspended portions of the tubal wall.<ref name=stora/> |
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