A long-term study of 277 cases of equine sinonasal disease. Part 2: Treatments and results of treatments

The treatments of 277 horses with equine sinonasal disease (1984-1996), des cribed by Tremaine and Dixon (2001), are reported here. Long-term (median d uration 24 months) outcomes of treatment of the more common disorders were good, with 92% of horses with sinonasal mycosis, 84% with primary sinusitis , 82% with sinus cysts, 78% with dental sinusitis and 75% with sinonasal tr auma reported to have complete remission of clinical signs. However, only 3 3% of horses with progressive ethmoidal haematoma (PEH) and 12% with sinona sal neoplasia reported long term remission of clinical signs.