Skin Lumps and Bumps in Dogs
During the course of grooming, playing with, or
handling your dog, you may discover a lump or bump or or beneath the
skin. To learn what it may be,
see this table on lumps or bumps or or beneath the skin.
- Abscess: A painful collection of pus at the site of a bite or puncture wound.
Basal cell tumor: Solitary nodule, usually on a narrow
base or stalk. Round, normally hairless, and may be ulcerated. Found on the
head, neck, and shoulders of older dogs.
- Ceruminous gland adenoma: A pinkish-white dome-shaped growth in the ear canal less than 1
centimeter in size. May become ulcerated and infected.
- Epidermal inclusion cyst: A firm lump beneath the skin. May discharge
cheesy material and become infected.
- Hematoma: A collection of clotted blood beneath the skin; often involves
the ear flaps.
- Histiocytoma: Rapidly growing dome-shaped (buttonlike) growth found
anywhere on the body, usually in young adults.
- Lipoma: Smooth round or oblong growth beneath the skin; feels somewhat
Mast cell tumor: Solitary or
multiple growths usually found on the trunk, perineum, and legs. More prevalent
in certain breeds, including Boxers, Golden Retrievers, Bulldogs, and Boston
- Melanoma: A brown or black pigmented nodule found in areas of dark skin.
Growths in mouth and nailbeds usually are malignant.
- Perianal gland tumor: A solitary or multinodular growth in the perineum
around the anus. Occurs most often in older intact males.
- Sebaceous adenoma: Also called sebaceous cyst. Smooth, pink, wartlike
growth less than 1 inch (2.5 cm) in diameter. Most common on the eyelids and limbs. Occurs in
older individuals (average age 10). Very common in Poodles and Cocker
- Skin papillomas: These grow out from the skin and may look like a wart. Not
painful or dangerous
- Soft-tissue sarcomas: Ill-defined or well-demarcated masses of varying size
and location. Often slow growing.
- Squamous cell carcinoma: A nonhealing gray or reddish-looking ulcer found on the belly, scrotum, feet, legs, lips, or
nose. May resemble a cauliflowerlike growth.
- Transmissible venereal tumors: Ulcerated, often multiple cauliflower-like
growths on the genitalia of both sexes.