Nasolacrimal | Duct Cat Link

Neoplasia affecting the NLD is rare but possible. Squamous cell carcinoma or lymphoma arising from the nasal cavity or lacrimal bone can invade the duct, causing obstruction and epiphora.

The nasolacrimal duct in the cat is a sophisticated structure vulnerable to a variety of pathological processes, ranging from congenital malformations to foreign body-induced inflammation. The anatomical distinctiveness of the feline NLD—specifically its termination site—requires veterinarians to adapt diagnostic procedures commonly used in canines. Successful management of NLD pathology relies on a thorough understanding of the anatomy, appropriate use of flushing and imaging techniques, and targeted antimicrobial therapy when indicated. nasolacrimal duct cat

Upon exiting the maxillary bone, the duct continues as a membranous structure along the ventral aspect of the nasal cavity. A distinguishing feature of feline anatomy is the duct's termination. In the dog, the NLD typically opens into the nasal vestibule near the external nares. In the cat, the NLD opens more caudally, usually in the ventral nasal meatus, approximately 0.5 cm to 1 cm caudal to the opening of the nasal cavity. This entrance is typically small and slit-like. An accessory opening has been reported in some specimens, though it is less consistent than in canines. Neoplasia affecting the NLD is rare but possible

The nasolacrimal duct helps maintain the health and well-being of a cat's eyes by: A distinguishing feature of feline anatomy is the

Bacteria thrive in the damp fur, often creating a noticeable smell.

The nasolacrimal duct is part of the feline tear drainage system. It consists of: