Standing excision of a paranasal osteoma in a 3-year-old Standardbred gelding

摘要

Osteomas are an uncommon benign neoplasia in horses, which most frequently affect the paranasal sinuses. There are only 25 reported cases in the literature. Clinical signs typically associated with paranasal osteoma formation include nasal discharge, ocular and/or facial swelling and distortion. Historically, surgical excision under general anaesthesia has been the standard approach for the treatment of large osteomas with standing surgery reserved for small masses. This case report describes standing removal of an extensive paranasal osteoma through a maxillary bone flap, without recurrence. Long-term follow up at 2 years confirmed a good cosmetic appearance and successful return to racing.