Nasal, Eye And Ear Cancers In Dogs And Cats

Tumours affecting the nasal cavity, eyes, and ears in pets are less common than skin or mammary cancers, but they can be highly invasive and locally destructive. In dogs, nasal adenocarcinoma, squamous cell carcinoma, and transitional carcinoma are among the most frequent nasal tumours.

Nasal lymphoma and squamous cell carcinoma are common in cats. Eye (ocular) tumours include melanoma, lymphoma, and squamous cell carcinoma, while ear tumours can arise from the external canal (ceruminous gland tumours) or middle ear structures.

Although these cancers may not always metastasise rapidly, their location poses challenges. They often invade bone, sinuses, or delicate soft tissues of the head, leading to breathing difficulties, neurological signs, facial deformity, pain, or vision and hearing loss.

Accurate staging is critical in shaping an effective treatment plan because of the complex anatomy and potential for hidden spread.

Nasal tumours typically present with persistent nasal discharge (often bloody), sneezing, facial swelling, noisy breathing, or neurological signs if the cancer extends toward the brain.

Ocular tumours may cause visible masses on the eye or eyelids, changes in pigmentation, chronic irritation, or impaired vision.

Ear tumours may present as chronic otitis, head shaking, pain, or discharge that doesn’t respond to treatment.

Diagnosis usually involves advanced imaging, biopsy, and clinical staging. However, conventional imaging may underestimate local invasion or fail to identify distant spread. This is where PET-CT provides a decisive advantage, giving anatomical detail and metabolic activity in one scan.

Cancers of the head and sensory organs can be difficult to stage and treat due to their proximity to vital structures. PET-CT helps veterinarians see beyond what is structurally visible:

• Detects metastasis to lymph nodes, lungs, or distant organs that may be missed on CT or radiographs.
• Differentiating active tumour tissue from inflammation or infection is crucial for nasal and ear tumours, where chronic inflammation can mimic cancer.
• Provides detailed metabolic mapping of tumour extent, guiding excision margins or deciding whether surgery is feasible.
• Highlights the most active tumour regions, enabling focused radiation dose delivery while sparing healthy brain, eyes, or hearing structures.
• Assesses metabolic activity after chemotherapy, radiation, or immunotherapy, helping to determine if therapy is effective.

Nasal and sensory organ cancers are distressing for pet owners because they affect breathing, sight, hearing, and quality of life. PET Theranostics provides vets with the most advanced imaging tools, helping distinguish between inflammation and true cancer, and guiding precise treatment planning. PET-CT provides the extra layer of certainty. If your patient or pet is diagnosed with nasal, ear or eye cancer then a referral to Pet Theranostics is essential.