title: Ovarian hilar proliferations resembling Sertoli cell tumours: microscopic neoplasms or non-neoplastic remnants?
abstract: OBJECTIVE
  To describe four cases of incidentally detected microscopic ovarian hilar Sertoli cell proliferation, a phenomenon that, as far as we are aware, has not been previously reported, and to discuss the differential diagnosis of these lesions.
  
  
  RESULTS
  The proliferations occurred in women aged 35-62 years, and were composed of solid and hollow tubules that were morphologically and immunohistochemically in keeping with Sertoli cells. Two cases were bilateral.
  
  
  CONCLUSIONS
  We feel that these uncommon proliferations are likely to represent non-neoplastic embryological remnants rather than hilar Sertoli cell tumours.
authors.affiliation: Department of Pathology, Belfast Health and Social Care Trust, Belfast, UK.
authors.forename: Jennifer
authors.initials: J
authors.lastname: Taylor
authors.affiliation: Department of Pathology and Laboratory Medicine, University Health Network, University of Toronto, Toronto, ON, Canada.
authors.forename: Blaise A
authors.initials: BA
authors.lastname: Clarke
authors.affiliation: Department of Pathology, St Helens and Knowsley Teaching Hospitals, Merseyside, UK.
authors.forename: Noori U
authors.initials: NU
authors.lastname: Hasan
authors.affiliation: Department of Pathology, Institute of Oncology, Ljubljana, Slovenia.
authors.forename: Gorana
authors.initials: G
authors.lastname: Gasljevic
authors.affiliation: Department of Pathology, Sunnybrook Health Sciences Centre, University of Toronto, Toronto, ON, Canada.
authors.forename: Matthew
authors.initials: M
authors.lastname: Cesari
authors.affiliation: Department of Pathology, Belfast Health and Social Care Trust, Belfast, UK.
authors.forename: W Glenn
authors.initials: WG
authors.lastname: McCluggage
mesh_terms: D000328:Adult; D003937:Diagnosis, Differential; D005260:Female; D006801:Humans; D033162:Incidental Findings; D008875:Middle Aged; D010049:Ovarian Diseases / Q000473:pathology*; D010051:Ovarian Neoplasms / Q000473:pathology; D012707:Sertoli Cell Tumor / Q000473:pathology*
keywords: Hilum; Sertoli cell tumour; immunohistochemistry; ovary; sex cord