title: Association of histologic features and cytogenetic abnormalities in ectopic pregnancies.
abstract: OBJECTIVE
  To evaluate the association between specific histologic features and cytogenetic abnormalities in ectopic pregnancies.
  
  
  METHODS
  Blinded histologic analysis.
  
  
  METHODS
  University hospital.
  
  
  METHODS
  Fifty-four patients with ectopic pregnancy for whom successful karyotypes and sufficient histologic material were available.
  
  
  METHODS
  Histologic evaluation of chorionic villi from ectopic pregnancies was done by two pathologists who were unaware of the cytogenetic outcome. Seventeen histologic features were evaluated: villus size, villus contour, ghost villi, hydropic villi, trophoblastic hyperplasia, trophoblastic hypoplasia, syncytial knots, Hofbauer cells, blood vessels, trophoblastic lacunae, trophoblastic inclusions or cisterns, degeneration, fibrohyalinization, microcalcifications, and perivillous and intervillous fibrin deposits.
  
  
  METHODS
  The association between histopathologic features and cytogenetic outcome.
  
  
  RESULTS
  The presence of ghost villi and intervillous or perivillous fibrin was found to be associated with cytogenetic abnormalities. These features are associated with previous fetal cell death.
  
  
  CONCLUSIONS
  This study does not support an association between specific histologic features of chorionic villi and cytogenetic abnormalities in ectopic pregnancies. The only histologic features that were associated with cytogenetic abnormalities (i.e., ghost villi and intervillous and perivillous fibrin) are merely a result of previous fetal cell death.
authors.affiliation: Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands.
authors.forename: M
authors.initials: M
authors.lastname: Goddijn
authors.forename: D
authors.initials: D
authors.lastname: Roos
authors.forename: M
authors.initials: M
authors.lastname: van Wely
authors.forename: F J
authors.initials: FJ
authors.lastname: ten Kate
authors.forename: D R
authors.initials: DR
authors.lastname: Cohen
authors.forename: F
authors.initials: F
authors.lastname: van der Veen
mesh_terms: D000293:Adolescent; D000328:Adult; D002824:Chorionic Villi / Q000378:metabolism / Q000473:pathology; D002869:Chromosome Aberrations / Q000378:metabolism; D025063:Chromosome Disorders; D020732:Cytogenetic Analysis; D005260:Female; D005337:Fibrin / Q000378:metabolism; D006801:Humans; D011003:Ploidies; D011247:Pregnancy; D011271:Pregnancy, Ectopic / Q000235:genetics* / Q000473:pathology*
chemical_list: D005337:Fibrin