Lapis ISSN 2398-2969

Ear: total ear canal ablation

Synonym(s): Total ear canal ablation and lateral bulla osteotomy (TECABO), TECA/LBO

Contributor(s): David Perpinan, Vladimir Jekl

Introduction

  • Otitis externa and otitis media/interna are common conditions found in lop rabbits, less so in dwarf rabbits.
  • Otitis media and otitis interna are commonly referred to one single pathology, although there are some differences between them.
  • Total ear canal ablation is indicated for the treatment of otitis externa non-responsible to medical treatment and/or for the treatment of otitis media/interna.
  • The lateral bulla osteotomy should always be performed in conjunction with the total ear canal ablation (TECA), regardless of clinical or radiographic signs of otitis media or otitis interna. It is technically an ostectomy.
  • The surgical technique has many variations, and each author describes it in a different way.

Uses

  • Resolution of otitis externa Otitis externa and prevention of development of otitis media Otitis media/interna.
  • Resolution of empyema of the bulla (accumulation of purulent material within the bulla) and inflammation of the bulla (otitis media):
    • Both conditions (empyema and otitis) can be associated with osteomyelitis of the lateral wall of the bulla.
    • It should be noted that many rabbits live for years with evidence of empyema of the bulla without clinical evidence of otitis media/interna; therefore, the advantage of performing TECABO on these cases is uncertain. However, in rabbits, if a TECA is performed, it must be accompanied with a lateral bulla osteotomy (LBO) Bulla osteotomy.
  • Resolution of a lateral ear canal resection, when this procedure has been unable to resolve the problem.
  • TECA (without lateral bulla osteotomy) may be indicated for cases of stenosis or neoplasia of the ear canal.

Advantages

  • It may provide a cure for conditions described above.

Disadvantages

  • Retrospective information on long-term outcome for TECABO and other alternative procedures is not available for rabbits.
  • It is an aggressive surgery with a significant rate of complications.

Requirements

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Preparation

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Procedure

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Aftercare

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Outcomes

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Prognosis

  • Good in some cases; fair to poor in other cases.

Further Reading

Publications

Refereed papers

  • Recent references from PubMed and VetMedResource.
  • Mancinelli E & Lennox A M (2017) Management of otitis in rabbits. J Exotic Pet Med 26, 63-73 USDA PubAg.
  • Budgeon C, Mans C, Chamberlin T et al (2014) Diagnosis and surgical treatment of a malignant trichoepithelioma of the ear canal in a pet rabbit (Oryctolagus cuniculus). J Am Vet Med Assoc 245 (2), 227-231 PubMed.
  • Chow E P (2011) Surgical management of rabbit ear disease. J Exotic Pet Med 20 (3), 182-187 KUNDOC.
  • Chow E P, Bennett R A & Whittington J K (2011) Total ear canal ablation and lateral bulla osteotomy for treatment of otitis externa and media in a rabbit. J Am Vet Med Assoc 239 (2), 228-232 PubMed.

Other sources of information

  • Eatwell K (2013) Treatment of Otitis Externa, Media and Interna in Rabbits. Vet Times. Website: www.vettimes.co.uk (pdf download).
  • Capello V (2006) Lateral Ear Canal Resection and Ablation in Pet Rabbits. In: Proc NAVC, Florida, USA. pp 1711-1713.


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