title: [Deep lobe of parotid gland tumors].
abstract: BACKGROUND
  Surgery of the parotid gland tumors can be difficult because of the presence of the facial nerve branches in the parotid tissue. The aim of the surgical treatment is complete removal of the tumor without damaging the facial nerve. There are several surgical techniques to expose the main trunk and the branches of the facial nerve. On the other hand during the surgery the nerve function is continuously observed by using facial nerve monitor.
  
  
  METHODS
  In the years of 2002-2004 208 patients with the parotid gland tumors were treated. There were 177 benign and 31 malignant tumors. 159 tumors were located in the superficial lobe of the parotid gland, 35 in the superficial and the deep lobe, and 14 only in the deep lobe. All patients were treated surgically.
  
  
  RESULTS
  In cases concerning the operations of the tumors located in the deep lobe, the facial nerve branches had to be exposed with help of the microscopic operating techniques. All tumors were removed totally. A paralysis of the facial nerve was observed in two cases of the pleomorhic adenoma with a diameter over 6 cm, and in 9 cases of malignant tumors of the superficial and the deep lobe, where the main trunk or the branches of the facial nerve were integrated with the tumor mass.
  
  
  CONCLUSIONS
  Surgical treatment of the parotid gland tumors presented in our study demonstrates good results. The risk of facial nerve paresis is higher in malignant tumors and big pleomorphic adenomas.
authors.affiliation: Katedra i Klinika Otolaryngologii i Onkologii Laryngologicznej AM im. Karola Marcinkowskiego w Poznaniu.
authors.forename: Tomasz
authors.initials: T
authors.lastname: Kopeć
authors.forename: Witold
authors.initials: W
authors.lastname: Szyfter
mesh_terms: D000328:Adult; D005260:Female; D005625:Frontal Lobe; D006801:Humans; D008297:Male; D008875:Middle Aged; D019647:Oral Surgical Procedures; D010306:Parotid Gland / Q000473:pathology / Q000601:surgery*; D010307:Parotid Neoplasms / Q000175:diagnosis* / Q000601:surgery*; D011044:Poland; D012189:Retrospective Studies; D016896:Treatment Outcome