title: Comparing capsule exposure using extracapsular dissection with partial superficial parotidectomy for pleomorphic adenoma.
abstract: The aim of this study was to compare capsule exposure using extracapsular dissection (ECD) with partial superficial parotidectomy (PSP) for pleomorphic adenoma.
  
  
  OBJECTIVE
  Long-term favorable results for recurrence and facial nerve function have been reported for ECD and PSP for parotid pleomorphic adenoma. Extracapsular dissection is distinguished from PSP in that the facial nerve is dissected in PSP but not in ECD. This article attempts to answer the following hypothesis: the margin of normal parotid tissue surrounding a parotid pleomorphic adenoma is less for ECD compared with PSP.
  
  
  METHODS
  This is a retrospective individual case-control study. Twelve consecutive parotidectomy procedures with a final pathology report of pleomorphic adenoma were retrospectively measured for margin (the percent of capsule exposure around the tumor). In 8 highly selected patients, ECD was performed. Four parotid surgical procedures not meeting strict criteria underwent PSP and served as controls.
  
  
  RESULTS
  The eight patients with ECD had a mean of 80% (71%-99%) of the capsule exposed. The 4 PSP procedures had 21% (4%-50%) of the capsule exposed (P < .05).
  
  
  CONCLUSIONS
  Extracapsular dissection results in higher capsule exposure.
authors.affiliation: Department of Surgery, Section of Otolaryngology, Helen F. Graham Cancer Center, Christiana Care, Thomas Jefferson University, Newark, DE 19713, USA. RobertLWitt@gmail.com
authors.forename: Robert L
authors.initials: RL
authors.lastname: Witt
authors.forename: Mary
authors.initials: M
authors.lastname: Iacocca
mesh_terms: D008949:Adenoma, Pleomorphic / Q000473:pathology / Q000601:surgery*; D000328:Adult; D000368:Aged; D004210:Dissection / Q000379:methods*; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D008297:Male; D008875:Middle Aged; D009364:Neoplasm Recurrence, Local; D010306:Parotid Gland / Q000473:pathology*; D010307:Parotid Neoplasms / Q000473:pathology / Q000601:surgery; D012189:Retrospective Studies; D016896:Treatment Outcome