title: Renal Remnant Presenting as a Large Retroperitoneal Mass in a Teenage Girl.
abstract: BACKGROUND
  Adolescents commonly present with a symptomatic pelvic mass. The vast majority of these masses are benign and gynecological in nature. Nonetheless, it is important to consider less common etiologies including retroperitoneal and enteric cysts.
  
  
  METHODS
  A 17-year-old female patient with chronic pelvic pain due to a large 9-cm cystic pelvic mass underwent laparoscopy. Operative findings indicated a retroperitoneal mass, which was excised in a minimally invasive fashion. Final pathology was suggestive of a remnant of a developmental renal anomaly.
  
  
  CONCLUSIONS
  This case highlights the importance of a broad differential when considering etiologies of a cystic pelvic mass. Clinical diagnosis and management are often challenging. Therefore, it is important to increase awareness of this diagnosis within the gynecological community.
authors: Department of Obstetrics and Gynecology, Washington University School of Medicine, St. Louis, Missouri. Electronic address: abrahamm@wudosis.wustl.edu.
authors: Margaret
authors: M
authors: Abraham
authors: Department of Obstetrics and Gynecology, Washington University School of Medicine, St. Louis, Missouri.
authors: Diane F
authors: DF
authors: Merritt
mesh_terms: D000293:Adolescent; D059350:Chronic Pain; D003560:Cysts / Q000150:complications; D003937:Diagnosis, Differential; D005260:Female; D006801:Humans; D007668:Kidney / Q000002:abnormalities*; D010535:Laparoscopy; D019060:Minimally Invasive Surgical Procedures / Q000379:methods*; D017699:Pelvic Pain / Q000209:etiology; D012186:Retroperitoneal Neoplasms / Q000175:diagnosis* / Q000601:surgery; D012187:Retroperitoneal Space / Q000473:pathology* / Q000601:surgery; D014057:Tomography, X-Ray Computed
keywords: Minimally invasive surgery; Pediatric and adolescent gynecology; Pelvic mass; Pelvic pain