Histiocytoma in Dogs: The Silent Skin Cancer That Demands Immediate Action!

Mon, 04 May 2026 22:28:04 +0000

Histiocytoma in Dogs: The Silent Skin Cancer That Demands Immediate Action When your dog suddenly develops a small, raised bump on their skin, it’s easy to dismiss it as a minor irritation or a simple pimple. But in some cases, that tiny growth could be a histiocytoma—a surprisingly common but often misunderstood skin tumor in dogs. Though typically benign, histiocytomas in canines demand prompt attention due to their rapid growth and potential for misdiagnosis. Understanding this silent skin cancer can help you act quickly and safeguard your pet’s health. ### What Is a Histiocytoma in Dogs? A histiocytoma is a benign tumor originating from mast cells—a type of immune cell found in the skin. These tumors are most frequently observed in young dogs, typically between the ages of 1 and 3, though they can occur in older dogs as well. Histiocytomas generally appear as small, round, firm lumps, often hairless and varying in color from pink to red or brown.