title: Unusual imaging appearances of endometriosis.
abstract: OBJECTIVE
  Endometriosis is defined as tissue resembling the endometrium occurring outside the uterus. The purpose of this article is to familiarize the radiologist with the wide spectrum of pelvic endometriosis and to review the distinctive imaging findings. Infrequent manifestations of endometriosis, including malignant degeneration, scar endometriosis, association with ascites, and invasive endometriosis, are described.
  
  
  CONCLUSIONS
  The manifestations of endometriosis commonly present a challenge to the gynecologist and radiologist. Familiarity with its varied presentations may allow accurate diagnosis.
authors.affiliation: Department of Radiology, The Ottawa Hospital, ON, Canada. choudhary@uthscsa.edu
authors.forename: Shaile
authors.initials: S
authors.lastname: Choudhary
authors.forename: Najla
authors.initials: N
authors.lastname: Fasih
authors.forename: Demetri
authors.initials: D
authors.lastname: Papadatos
authors.forename: Venkateswar R
authors.initials: VR
authors.lastname: Surabhi
mesh_terms: D000293:Adolescent; D000328:Adult; D004715:Endometriosis / Q000175:diagnosis*; D005260:Female; D006801:Humans; D010535:Laparoscopy / Q000379:methods*; D008279:Magnetic Resonance Imaging / Q000379:methods*; D008875:Middle Aged; D014463:Ultrasonography / Q000379:methods*; D055815:Young Adult