title: Does packing the eustachian tube impact cerebrospinal fluid rhinorrhea rates in translabyrinthine vestibular schwannoma resections?
abstract: OBJECTIVE
  To calculate cerebrospinal fluid (CSF) leak rates for translabyrinthine (TL), middle cranial fossa (MCF), and retrosigmoid/suboccipital (SO) craniotomies performed for removal of vestibular schwannoma (VS) and analyze whether packing the eustachian tube (ET) in TL VS resections impacts CSF rhinorrhea rates.
  
  
  METHODS
  Retrospective.
  
  
  METHODS
  Tertiary care center.
  
  
  METHODS
  Chart review.
  
  
  RESULTS
  Three hundred fifty-nine VS resections were reviewed in 356 patients ranging from 10 to 86 years of age. Two hundred thirty-one TL, 70 MCF, 53 SO, and 5 combined TL/SO procedures were analyzed. Total CSF leak rates (incisional, otorrhea, and rhinorrhea) were 14.2% for TL, 11.4% for MCF, and 13.2% for SO approaches. Differences in overall CSF leak rates were not statistically significant. For those who underwent TL craniotomies, 2 groups of patients were identified based on whether their ETs were packed during surgery. In 1 group, the incus was removed, the aditus enlarged, the ET packed, and the middle ear filled with muscle. In the second group, the aditus, epitympanum and middle ear were packed without removing the incus, and the ET was not packed. Of 148 patients who had their ET packed, 12 developed CSF rhinorrhea (8.1%). The CSF rhinorrhea rate for patients who did not have ET packing was 5.9% (3 of 51 patients). This difference was not statistically significant (p = 0.80). When Proplast was used to pack the ET (121 patients), the CSF rhinorrhea rate was 5.8%. Unfortunately, this material extruded in 4 of 121 patients (3.3%) and presented clinically as delayed purulent otorrhea.
  
  
  CONCLUSIONS
  Cerebrospinal fluid leak rates were similar in patients undergoing TL, SO, and MCF approaches, and CSF rhinorrhea was not decreased by ET packing. Patients whose ETs are packed with Proplast are at risk for extrusion and otorrhea years after their initial VS resection.
authors: Department of Otolaryngology-Head & Neck Surgery, The Ohio State University, Columbus, Ohio 43210, USA. Abraham.Jacob@osumc.edu
authors: Abraham
authors: A
authors: Jacob
authors: Jared S
authors: JS
authors: Bortman
authors: Lawrence L
authors: LL
authors: Robinson
authors: Lianbo
authors: L
authors: Yu
authors: Edward E
authors: EE
authors: Dodson
authors: D Bradley
authors: DB
authors: Welling
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D001458:Bandages; D002559:Cerebrospinal Fluid Rhinorrhea / Q000453:epidemiology / Q000209:etiology*; D002648:Child; D015331:Cohort Studies; D003390:Cranial Nerve Neoplasms / Q000150:complications* / Q000601:surgery*; D003399:Craniotomy; D005064:Eustachian Tube; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009464:Neuroma, Acoustic / Q000150:complications* / Q000601:surgery*; D013506:Otologic Surgical Procedures; D011183:Postoperative Complications / Q000453:epidemiology / Q000209:etiology*; D012189:Retrospective Studies; D000160:Vestibulocochlear Nerve Diseases / Q000150:complications* / Q000601:surgery*