Nasal and paranasal sinus chondrosarcoma are slow growing, progressive, invasive tumors of the nose, nasal cavity and surrounding communicating recesses. A CSA (chondrosarcoma) of the nasal and paranasal sinuses arises from the mesenchymal tissue, a connective collagenous tissue that is found throughout the body, and metastasizes to other parts of the body, including the nasal bones. It usually occurs on one side of the nasal cavity and extends to the other side over time.
This tumor can occur in any dog of any age, breed or sex, however, it is most common in middle aged animals. Chondrosarcoma tends to develop at a younger age than other nasal tumors.
Common symptoms associated with this condition include
Intermittent unilateral or bilateral nose bleed and/or discharge of pus containing material
Sneezing and difficult breathing (dyspnea)
Epiphora (increased tear production)
Unilateral or bilateral obstruction of nasal air flow
Bad breath (halitosis)
Poor appetite, weight loss
Seizures with brain involvement