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131 results for “Tumors”
Canine and Feline Spinal Cord Tumors
Spinal cord tumors in dogs and cats produce signs based on where they compress the cord, ranging from limb weakness to paralysis and loss of bladder control. German Shepherds and young to middle-aged dogs are commonly affected, with tumors often located between the 10th thoracic and 3rd lumbar vertebrae.
Canine and Feline Brain Tumors
Brain tumors in dogs and cats are most often meningeal or glial tumors that appear in middle-aged to older pets, with some breeds such as Boxers and Bulldogs overrepresented. They compress brain tissue and cause gradually worsening neurological signs including behavior changes, circling, head tilt, blindness, and seizures.
Mammary Tumors in Dogs and Cats
Mammary tumors are common in intact female dogs and are the third most common feline tumor. They often appear as firm nodules in the mammary chain and can ulcerate or spread to lymph nodes and lungs. Early spaying sharply lowers risk, and surgery is the main treatment.
Cutaneous Mast Cell Tumors in Dogs and Cats
Cutaneous mast cell tumors can appear anywhere on the skin or internal organs, most often on the hind legs, perineum, and prepuce. They vary from slow soft lumps to fast hard nodules and may ulcerate. Surgical removal of well-defined tumors is the main treatment.
Basal Cell Tumors in Dogs and Cats
Basal cell tumors are common, usually slow-growing skin tumors of dogs and cats that arise from the basal layer of the epidermis or hair follicles. Most are benign and stay confined to the skin, though larger ones can ulcerate. Complete surgical removal is typically curative.
Penile and Preputial Tumors in Dogs and Cats
Tumors of the penis and prepuce are uncommon and, when reported, have been seen only in dogs. Types include papilloma, transmissible venereal tumor, squamous cell carcinoma, fibroma, lymphosarcoma, and hemangioma. Growths may ulcerate, bleed, and produce a foul discharge.
Transmissible Venereal Tumors in Dogs and Cats
Transmissible venereal tumor is a contagious cancer spread between dogs through mating or close contact, destroying the external genitals and nearby mucosa. It appears as a friable, cauliflower-like mass that may bleed and ulcerate. Surgery, freezing, or anti-cancer medication can clear it.
Prostatic Tumors in Dogs and Cats
Prostatic tumors occur mainly in middle-aged and older dogs and mimic benign prostatic conditions. Adenocarcinoma is the most serious type and can spread to local lymph nodes, spine, and pelvis. Signs include weight loss, thirst, back pain, and difficulty urinating.
Sertoli Cell Tumors in Dogs and Cats
Sertoli cell tumors are hormone-producing testicular tumors of older male dogs and cats that cause feminization through excess estrogen. Signs include symmetrical hair loss, enlarged breasts, and a lengthened prepuce. Surgical removal of both testicles resolves most signs within a few months.
Testicular Tumors in Dogs and Cats
Testicular tumors are among the more common tumors in older dogs and are rare in cats. They often cause feminization from excess estrogen, including attraction from other males and symmetrical hair loss. Surgical removal of the affected testicle is the standard treatment, and neutering prevents the disease.