title: A rare case of precoccygeal endometriosis.
abstract: BACKGROUND
  Endometriosis is commonly identified in the abdomen, specifically the ovaries, adnexa, and fallopian tubes, and sometimes in more distant areas; precoccygeal endometriosis is an extremely rare phenomenon.
  
  
  METHODS
  We present a case involving a 44-year-old woman diagnosed and treated for precoccygeal endometriosis. She underwent laparotomy, extensive lysis of pelvic adhesions, and resection of a 2.5-cm midline precoccygeal mass. After surgical excision of the precoccygeal endometriosis, the patient recovered without incident.
  
  
  CONCLUSIONS
  Precoccygeal endometriosis is a very rare diagnosis.
authors.affiliation: Gynecologic Oncology Associates, Hoag Memorial Hospital Cancer Center, Newport Beach, California 92663, USA. bram@gynocology.com
authors.forename: John P
authors.initials: JP
authors.lastname: Micha
authors.forename: Bram H
authors.initials: BH
authors.lastname: Goldstein
authors.forename: Mark A
authors.initials: MA
authors.lastname: Rettenmaier
authors.forename: John V
authors.initials: JV
authors.lastname: Brown
mesh_terms: D000328:Adult; D003050:Coccyx; D004715:Endometriosis / Q000175:diagnosis*; D005260:Female; D006801:Humans