title: Dorsal approach to presacral biopsy: technical case report.
abstract: OBJECTIVE
  Biopsy of the presacral space is often awkward, technically difficult, and unrewarding when the sacrum is intact and the procedure is performed either by open operation or with computed tomographic guidance through the abdomen or perineum.
  
  
  METHODS
  We describe a patient with metastatic adenocarcinoma who presented with leg pain and computed tomographic evidence of a high, small mass anterior to an intact sacrum.
  
  
  METHODS
  By drilling a hole through the sacrum lateral to the canal and between the roots, a biopsy of such a mass may be performed easily, safely, and quickly.
  
  
  CONCLUSIONS
  A dorsal approach to presacral biopsy may be easily performed with readily available technology.
authors.affiliation: Department of Neurological Surgery, Group Health Cooperative of Puget Sound, Seattle, Washington, USA.
authors.forename: R L
authors.initials: RL
authors.lastname: Rapport
authors.forename: G S
authors.initials: GS
authors.lastname: Ferguson
mesh_terms: D000230:Adenocarcinoma / Q000473:pathology / Q000556:secondary*; D001707:Biopsy, Needle / Q000295:instrumentation*; D015179:Colorectal Neoplasms / Q000473:pathology*; D004867:Equipment Design; D006801:Humans; D008297:Male; D008875:Middle Aged; D012447:Sacrum / Q000473:pathology*; D013125:Spinal Neoplasms / Q000473:pathology / Q000556:secondary*; D014057:Tomography, X-Ray Computed / Q000295:instrumentation*