Understanding lumps and bumps in our dogs and cats

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Lumps and bumps are common occurrences in pets, particularly as they age. While these growths are often seen in older dogs and cats, younger animals can also develop them. The key to ensuring your pet’s health is to regularly check their body for any unusual changes and understand the different types of lumps that can appear.

Regular checks are crucial

Performing regular checks on your pet’s body is essential for early detection of any lumps or bumps. To do this, gently run your fingers through your pet’s coat, paying attention to the head, back, sides, chest, belly, and legs. Becoming familiar with what is normal for your pet will help you quickly notice any new or unusual growths.

Types of lumps you might find

• Lipomas (fatty lumps): Lipomas are among the most common lumps found on dogs and are more frequently seen in overweight pets. These are benign tumours that grow slowly and rarely spread to other areas. Although lipomas are usually harmless, in some cases, they may need to be surgically removed, especially if they interfere with your pet’s movement or comfort.

• Mast cell tumours: These are a common form of cancer that can present in various ways. Certain dog breeds may be more prone to developing mast cell tumours, but any breed can be affected. These tumours are potentially very serious, making early detection and treatment vital.

• Mammary tumours (breast cancer): Mammary tumours can be among the most aggressive types of cancer in pets, particularly in undesexed females. These lumps require immediate veterinary attention to determine the best course of action.

• Warts: Warts are often seen in older pets and appear as small skin tags. While they are usually harmless, they can become irritated and may need to be removed if they cause discomfort.

• Sebaceous cysts: These cysts are swellings filled with a creamy substance and are often seen in older animals. Although they may become red and irritated, they usually do not pose significant health risks.

• Histiocytoma: This is a red, button-like lump commonly found on younger pets. Histiocytomas typically resolve on their own within a few months, but they should still be monitored for any changes.

Identifying cancerous lumps

It is impossible to determine whether a lump is cancerous just by looking at it. If you discover a lump on your pet, your veterinarian will need to examine it and possibly conduct tests, such as a biopsy, to make an accurate diagnosis. A biopsy involves collecting cells from the lump, sometimes requiring anaesthesia, to determine whether the growth is benign or malignant.

Benign vs. malignant lumps

Benign lumps are non-cancerous and generally do not spread, though they may grow over time. If a benign lump interferes with your pet’s movement or daily activities, surgical removal might be recommended. Malignant lumps, on the other hand, are aggressive and can spread to other parts of the body, including vital organs like the lungs and liver. These types of growths must be treated promptly to prevent further health complications.

By routinely checking your pet and staying alert to any changes, you can help ensure early diagnosis and effective treatment. If you have any concerns about lumps or bumps on your pet, contact our team on 4736 2027.

Kellie Tickner, Orchard Hills Veterinary Hospital

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