TL;DR: Wart-like eyelid growths in cats are often benign, but they require a veterinary diagnosis to rule out malignancy or corneal irritation. Seek priority care if the growth causes squinting, pain, or colored discharge.
What are the common causes of a wart-like growth on my cat's eyelid?
Finding a 'wart-like' bump on your cat's eyelid is a common occurrence, especially in middle-aged to senior cats. These growths are typically one of the following:
- Meibomian gland adenomas (benign oil gland tumors)
- Viral papillomas
- Skin tags
- Cysts
- Malignant tumors (less common, but require professional diagnosis)
How do I know if my cat's eyelid growth is an emergency?
The urgency level for a wart-like growth on the eyelid is generally Low, but you should evaluate your cat based on these criteria:
- Routine Appointment: Your cat is eating normally, not scratching at the eye, and the eye itself is not red or cloudy.
- Priority Appointment: The growth is causing your cat to squint, there is yellow or green discharge, or the eye looks painful.
How does providing a photo help triage my cat's eyelid growth?
In veterinary triage, a clear, high-resolution photo is one of the most powerful tools you can provide. A photo allows a professional to:
- Assess the exact location, color, and texture of the mass.
- Determine if the growth is rubbing against the cornea (the clear surface of the eye), which could lead to a painful ulcer.
- Establish a visual record to monitor if the growth is changing in size over time.
Clinical Context (Merck Veterinary Manual)
Eyelid and conjunctival tumors are the most frequent primary ophthalmic neoplasms in cats, and are usually malignant, making them more difficult to treat than in dogs. Squamous cell carcinomas, more common in white cats with nonpigmented eyelid margins, can involve the eyelids, conjunctiva, and nictitating membrane, appearing as pink, roughened, irregular masses or thickened ulcerations. Other less frequent neoplasms include adenocarcinomas, fibrosarcomas, neurofibrosarcomas, and basal cell carcinomas. Treatment, including surgical excision, radiation therapy, and cryotherapy, varies with the tumor type, location, and size; however, the prognosis for these malignant tumors is often poor.
Chapter: Oncology, Ophthalmology
Source: The Merck Veterinary Manual, 11th Edition (Page 518)