Eyelid Tumors: The Sooner, The Better

Eyelid masses or tumors are a common finding in canine patients. Cats can also develop eyelid tumors. Although tumors of the eyelid margin tend to occur more commonly in older patients, they have been documented in young and middle-aged animals as well. Prognosis and treatment plans will depend on the tumor type, species, and age of the patient. For instance, most eyelid masses in dogs are benign, focally invasive tumors, such as meibomian gland adenomas, melanocytomas, and papillomas. Cats, on the other hand, are more likely to develop aggressive or malignant tumors, such as squamous cell carcinomas and mast cell tumors. In those patients in whom a malignant tumor is suspected, additional diagnostic testing may be recommended prior to tumor removal, specifically cytology and/or biopsy, chest x-rays, abdominal ultrasounds, and lymph node aspirates.

Treatment of a small, benign eyelid tumor may allow for less invasive surgical techniques. For example, many veterinary ophthalmologists are able to perform eyelid tumor debulking and adjunctive cryotherapy using only mild sedation or, in some cases, none at all. Typically, sutures are not needed as the debulking site is not full thickness. Treatment of a malignant or a full-thickness tumor will require more extensive surgery, known as a wedge resection. These patients will require general anesthesia and will have sutures that may need to be removed approximately 2 weeks after surgery.

Regardless of tumor type, it is important to seek veterinary care as soon as the eyelid mass is noticed. Early intervention can prevent local complications from the eyelid mass such as corneal ulceration, corneal scar tissue formation, and conjunctivitis, some of which can be painful or vision-threatening. More importantly, early intervention may prevent the spread of a malignant tumor to other areas of the body. Early intervention may help extend your pet’s life.