title: Removal of numerous vesical magnetic beads with a self-made magnetic sheath.
abstract: BACKGROUND
  Sexual curiosity and the quest for sexual excitement are the most frequent reasons for patients to introduce foreign bodies into the urethra or the bladder. Imagination and surgical skill are essential for urologists to retrieve such vesical foreign bodies.
  
  
  OBJECTIVE
  The aim of this study was to describe a novel method for retrieving vesical magnetic beads, which were inserted for autoeroticism by a male adolescent, with a self-made "magnetic sheath."
  
  
  METHODS
  A 21-year-old young man inserted more than one hundred small magnetic beads into his urethra for sexual excitement, which lately caused symptoms of gross hematuria, frequent urination, and acute lower abdominal pain when walking or urinating. We invented a magnetic sheath by fixing a magnetic bead on the tip of an F9.5 ureteral access sheath to remove the foreign bodies in a minimally invasive way.
  
  
  METHODS
  The feasibility of using magnetic sheath to remove vesical foreign bodies; and operation duration.
  
  
  RESULTS
  Under direct visualization of an F8/9.8 ureteroscope, the magnetic sheath could firmly attach to the magnetic bead inside the bladder and could easily pull out 5 to 15 beads each time. It took about 5 minutes to remove all of the 125 magnetic beads by utilizing our magnetic sheath.
  
  
  CONCLUSIONS
  The self-made magnetic sheath can make the task of removal of magnetic foreign bodies easy to urologists, requiring less time and surgical skills. The new equipment provides a new method for urologists to deal with the challenging task of removing metal vesical foreign bodies which were self-inserted for masturbation.
authors.affiliation: Department of Urology, Changhai Hospital, Second Military Medical University, Shanghai, China.
authors.forename: Shu-Xiong
authors.initials: SX
authors.lastname: Zeng
authors.forename: Hui-Zhen
authors.initials: HZ
authors.lastname: Li
authors.forename: Zhen-Sheng
authors.initials: ZS
authors.lastname: Zhang
authors.forename: Xin
authors.initials: X
authors.lastname: Lu
authors.forename: Xiao-Wen
authors.initials: XW
authors.lastname: Yu
authors.forename: Qing-Song
authors.initials: QS
authors.lastname: Yang
authors.forename: Chong
authors.initials: C
authors.lastname: Ma
authors.forename: Chuan-Liang
authors.initials: CL
authors.lastname: Xu
authors.forename: Ying-Hao
authors.initials: YH
authors.lastname: Sun
mesh_terms: D000293:Adolescent; D005547:Foreign Bodies / Q000150:complications* / Q000601:surgery*; D005548:Foreign-Body Migration / Q000150:complications* / Q000601:surgery; D052816:Foreskin / Q000293:injuries*; D006801:Humans; D060328:Magnetic Phenomena; D059346:Magnets / Q000009:adverse effects*; D008297:Male; D008418:Masturbation; D019060:Minimally Invasive Surgical Procedures; D012725:Sexual Behavior; D016896:Treatment Outcome; D014521:Urethra / Q000293:injuries*; D001745:Urinary Bladder Diseases / Q000209:etiology* / Q000601:surgery; D055815:Young Adult
keywords: Autoerotism; Foreign Body; Magnetic Beads; Urinary Bladder