title: Ovarian endomyometrioma with atypias: description of a case.
abstract: OBJECTIVE
  To report on a patient with endomyometrioma with atypias and to review the literature.
  
  
  METHODS
  Case report and literature review.
  
  
  METHODS
  Clinical and pathologic.
  
  
  METHODS
  A 33-year-old nulliparous woman with right flank pain and infertility.
  
  
  METHODS
  Accuracy of diagnosis, hypotheses on endomyometrioma pathogenesis.
  
  
  RESULTS
  A 33-year-old woman with an 8-cm right ovarian mass is reported. An extensive review of the literature on this rare disease revealed only nine well-documented cases with different views on pathogenesis. The final diagnosis required an accurate sampling and the aid of immunohistochemical markers.
  
  
  CONCLUSIONS
  Endomyometrioma is an extremely rare entity. None of the previous cases showed cytologic atypias. The finding of atypias, in analogy with endometriosis, suggests the müllerian metaplastic theory.
authors.affiliation: Department of Pathology, Faculty of Medicine Agostino Gemelli, Catholic University, Rome, Italy. gfzannoni@rm.unicatt.it
authors.forename: Gian Franco
authors.initials: GF
authors.lastname: Zannoni
authors.forename: Valerio Gaetano
authors.initials: VG
authors.lastname: Vellone
authors.forename: Guido
authors.initials: G
authors.lastname: Fadda
authors.forename: Massimiliano
authors.initials: M
authors.lastname: Guerriero
authors.forename: Arnaldo
authors.initials: A
authors.lastname: Carbone
mesh_terms: D000328:Adult; D005260:Female; D006801:Humans; D009215:Myometrium / Q000473:pathology*; D010049:Ovarian Diseases / Q000175:diagnosis / Q000473:pathology*