Disease of the paranasal sinuses of the horse is common and treatment often involves
lavage and sometimes surgery. The development of minimally-invasive, sinus-specific
treatments, such as balloon sinuplasty, requires a thorough understanding of this complex
anatomical region. To improve this understanding, 10 heads from dead horses of various
ages were grossly dissected. The heads were transected sagittally and each half was
dissected to expose the left and right nasomaxillary apertures and associated structures …