Equine nasal and paranasal sinus tumours. Part 1: Review of the literature and tumour classification

KW Head, PM Dixon*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

The normal gross and histological anatomy of the equine nasal and paranasal sinuses are reviewed and the relationships between the local anatomy, the occurrence of different tumour types, and of tumour spread are examined. The histological classification of the more common equine sinonasal tumours and tumourlike lesions are discussed. Clinical and pathological descriptions of 50 more recently recorded such tumours are separately tabulated. The literature shows that equine sinonasal tumours, both endemic and sporadic, are relatively uncommon in horses, with non-neoplastic growths such as maxillary (sinus) cysts, progressive ethmoid haematoma and inflammatory nasal polyps more commonly recorded. The equine paranasal sinuses, especially the caudal maxillary sinus, are the most common sites for sinonasal tumours and, in contrast to other species, primary nasal tumours are uncommon. The more common tumour types include squamous cell carcinoma that, in some cases, arise in the oral cavity and spread to the maxillary sinuses; adenocarcinomas; bone and dental tumours; fibrosarcomas and haemangiosarcomas. Except for some benign bone tumours, there are few records of successful treatment of equine sinonasal tumours.

Original languageEnglish
Pages (from-to)261-278
Number of pages18
JournalVeterinary Journal
Volume157
Issue number3
Publication statusPublished - May 1999

Keywords

  • equine
  • nasal
  • paranasal sinuses
  • neoplasia
  • non-neoplastic growths
  • sinonasal tumour classification
  • pathology
  • PROGRESSIVE ETHMOID HEMATOMA
  • SQUAMOUS-CELL CARCINOMA
  • HORSE
  • ADENOCARCINOMA
  • SURGERY
  • OSTEOMA
  • LESIONS

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