title: Castleman disease presenting as a pelvic mass.
abstract: BACKGROUND
  To our knowledge, giant lymph node hyperplasia (Castleman disease) may present as a pelvic mass on magnetic resonance imaging (MRI).
  
  
  METHODS
  A postmenopausal woman with rapidly enlarging leiomyoma uteri was found to have a suspicious left adnexal mass mimicking an ovarian neoplasm on preoperative MRI. At laparotomy, the suspected uterus and normal ovaries were extirpated. In addition, a firm, 4 x 8-cm solid mass within the sigmoid colon mesentery was found and resected. The final histologic diagnosis was Castleman disease.
  
  
  CONCLUSIONS
  Entities such as Castleman disease should be considered when assessing a pelvic mass. Characterization of the origin of pelvic masses can often be difficult, despite sophisticated diagnostic imaging studies such as MRI.
authors.affiliation: Department of Obstetrics and Gynecology, Northwestern University Medical School, Chicago, Illinois, USA.
authors.forename: S R
authors.initials: SR
authors.lastname: MacDonald
authors.forename: J R
authors.initials: JR
authors.lastname: Lurain
authors.forename: F
authors.initials: F
authors.lastname: Hoff
authors.forename: D
authors.initials: D
authors.lastname: Variakojis
authors.forename: D A
authors.initials: DA
authors.lastname: Fishman
mesh_terms: D000291:Adnexal Diseases / Q000175:diagnosis / Q000209:etiology*; D005871:Castleman Disease / Q000150:complications* / Q000175:diagnosis; D003937:Diagnosis, Differential; D005260:Female; D006801:Humans; D008279:Magnetic Resonance Imaging; D008875:Middle Aged; D010386:Pelvic Neoplasms / Q000175:diagnosis; D012810:Sigmoid Diseases / Q000150:complications / Q000175:diagnosis