Surgical removal of an intraosseous nasolacrimal duct foreign body in a dog identified using computed tomography dacryocystography

A 5‐year‐old male‐neutered English Springer Spaniel was presented with a 3‐month history of unilateral conjunctivitis and profuse mucopurulent ocular discharge that was non‐responsive to medical therapy. Positive‐contrast computed tomography dacryocystography (CT‐DCG) identified a suspected foreign body within the intraosseous portion of the nasolacrimal duct as it traversed the maxillary sinus, with associated chronic dacryocystitis. The imaging findings enabled surgical planning, and an intraosseous approach was used by a specialist small animal surgeon and a veterinary ophthalmologist to successfully remove the foreign. Clinical signs resolved completely following surgery, with no long‐term complications. This case highlights the value of CT‐DCG for localisation of nasolacrimal duct pathology and surgical planning in dogs.