title: The radical transbasal approach for resection of anterior and midline skull base lesions.
abstract: OBJECTIVE
  Craniofacial surgery can be performed to treat midline and anterior skull base lesions by creating a bicoronal scalp incision without the need for an additional transfacial procedure. Originally described as the transbasal approach, several modifications for further exposure of the skull base have been described. The authors present data on the application and outcomes of a modified transbasal approach. The radical transbasal approach consists of a bifrontal craniotomy and a frontoorbitonasal osteotomy.
  
  
  METHODS
  Between 1992 and 2002, 41 patients (28 male and 13 female patients with a mean age of 38.3 years [range 7-77 years]) underwent 44 radical transbasal procedures. Twenty-three malignant and 18 benign lesions involving the midline skull base were treated. These cases were reviewed retrospectively. Gross-total resection of 30 lesions was achieved. Seven lesions were resected subtotally and six partially; one lesion was debulked. Complications occurred in 26 (59.1%) of the 44 operations and mostly consisted of cerebrospinal fluid leakage. The surgery-related mortality rate was 6.8% (three patients). Based on their pre- and postoperative Karnofsky Performance Scale scores, 86.4% of patients improved or remained the same.
  
  
  CONCLUSIONS
  The radical transbasal approach increases the midline craniofacial corridor by allowing the globes to be safely retracted laterally. It also enhances exposure of the maxillary sinus from above. The morbidity and mortality rates associated with this procedure are high but consistent with the known rates for craniofacial surgery. This approach is best suited for the treatment of anterior skull base tumors that extend into the nasal cavity, orbit, ethmoid sinus, nasopharynx, and upper clivus. The approach may allow resection of tumors involving the maxillary sinus area without the need for an additional transfacial approach.
authors.affiliation: Division of Neurological Surgery, Barrow Neurological Institute, St. Joseph's Hospital and Medical Center, Southwest Craniofacial Center, Phoenix, Arizona 85013-4496, USA.
authors.forename: Iman
authors.initials: I
authors.lastname: Feiz-Erfan
authors.forename: Patrick P
authors.initials: PP
authors.lastname: Han
authors.forename: Robert F
authors.initials: RF
authors.lastname: Spetzler
authors.forename: Eric M
authors.initials: EM
authors.lastname: Horn
authors.forename: Jeffrey D
authors.initials: JD
authors.lastname: Klopfenstein
authors.forename: Randall W
authors.initials: RW
authors.lastname: Porter
authors.forename: Mauro A T
authors.initials: MA
authors.lastname: Ferreira
authors.forename: Stephen P
authors.initials: SP
authors.lastname: Beals
authors.forename: Salvatore C
authors.initials: SC
authors.lastname: Lettieri
authors.forename: Edward F
authors.initials: EF
authors.lastname: Joganic
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D002648:Child; D003399:Craniotomy / Q000379:methods; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009296:Nasal Cavity / Q000601:surgery; D019635:Neurosurgical Procedures / Q000379:methods*; D009915:Orbit / Q000601:surgery; D011183:Postoperative Complications; D012189:Retrospective Studies; D019291:Skull Base / Q000601:surgery*; D019292:Skull Base Neoplasms / Q000601:surgery*; D016896:Treatment Outcome