title: Use of biopsy sheath to improve standardization of renal mass biopsy in tissue-ablative procedures.
abstract: OBJECTIVE
  We used a biopsy sheath to standardize and improve biopsy specimens obtained during laparoscopic cryoablation.
  
  
  METHODS
  Tru-Cut biopsy was performed using a resized sheath in three patients undergoing laparoscopic cryoablation of renal masses.
  
  
  RESULTS
  All three biopsy specimens were sufficient for pathologic evaluation and representative of the tissue mass.
  
  
  CONCLUSIONS
  The application of a biopsy sheath to standardize the depth of needle penetration during Tru-Cut biopsy provides better results and minimizes false-negative studies.
authors.affiliation: Section of Urology, Department of Surgery, University of Chicago Pritzker School of Medicine, Chicago, Illinois 60639, USA.
authors.forename: David E
authors.initials: DE
authors.lastname: Rapp
authors.forename: Marcelo
authors.initials: M
authors.lastname: Orvieto
authors.forename: Mitchell H
authors.initials: MH
authors.lastname: Sokoloff
authors.forename: Arieh L
authors.initials: AL
authors.lastname: Shalhav
mesh_terms: D001707:Biopsy, Needle / Q000592:standards; D003452:Cryosurgery / Q000379:methods; D006801:Humans; D007668:Kidney / Q000473:pathology*; D007674:Kidney Diseases / Q000473:pathology* / Q000601:surgery*; D010535:Laparoscopy