Objective: To describe the use of an endoscope to assist in performing minimally invasive dacryocystorhinostomy in a dog to successfully manage a nasolacrimal duct cyst (dacryocyst).
Animal Studied: A 4-year-old female spayed American Staffordshire Terrier with chronic epiphora and swelling ventromedial to the nasal canthus of the right eye and reverse sneezing.
Procedures: Computed tomography revealed a fluid-filled cystic lesion of the right nasolacrimal duct with extensive nasal extension and secondary obstructive frontal sinusitis.