Squamous Cell Carcinoma in Dogs and Cats
Squamous cell carcinoma is a sun-linked skin tumor that is the second most common in cats, favoring the ears, lips, and nose and often invading bone. It is diagnosed by biopsy and treated with wide surgical removal, though recurrence is common.
Sebaceous Adenomas in Dogs and Cats
Sebaceous adenomas are usually benign, curable oil-gland tumors of older dogs and cats, appearing as firm, movable, hairless lumps that may ulcerate. Benign forms are cured by removal or freezing, while adenocarcinomas need wider surgery.
Basal Cell Tumors in Dogs and Cats
Basal cell tumors are common, usually benign skin tumors of dogs and cats that grow slowly and stay in the skin, sometimes ulcerating. They are diagnosed by biopsy and cured by complete surgical removal, with follow-up anti-cancer medication if malignant.
Penile and Preputial Tumors in Dogs and Cats
Penile and preputial tumors are rare genital growths reported in dogs, including papilloma, squamous cell carcinoma, and transmissible venereal tumor. They may ulcerate and bleed, are diagnosed by biopsy, and are treated with wide surgical removal plus follow-up anti-cancer medication.
Transmissible Venereal Tumors in Dogs and Cats
Transmissible venereal tumor is a contagious cancer passed between dogs through mating or close contact, causing friable, bleeding genital masses. It is diagnosed by biopsy and treated with surgery, freezing, or anti-cancer medication, with isolation to prevent spread.
Can Povidone-Iodine Cure Cat Ringworm?
Povidone-iodine has broad antimicrobial action but does not reliably kill the fungi that cause ringworm, so it is only supportive. True antifungals, topical for small lesions or veterinary-directed oral azole medication for severe cases, are the main treatment.
Home Care for Cat Ringworm: Practical, Low-Cost Treatment
Ringworm is a fungal skin infection in cats caused mainly by Microsporum canis, producing circular hair loss with scaling and itching. Diagnosis uses Wood's lamp, culture, or microscopy, and treatment ranges from topical antifungals and medicated dips to veterinary-directed oral azole antifungals for severe cases.
Skin Disease in Collies and Other Herding Breeds: Why Medication Must Be Chosen Carefully
Collies and related herding breeds commonly carry an MDR1 mutation that makes them sensitive to macrocyclic lactone parasiticides such as ivermectin. Skin disease is treated as usual, but parasite control must avoid ivermectin and use veterinarian-approved alternatives to prevent toxicity.
Prostatic Tumors in Dogs and Cats
Prostatic tumors affect mostly older dogs and mimic benign prostatic disease, causing weight loss, thirst, back pain, and blocked urination. Adenocarcinoma can spread to lymph nodes, spine, and pelvis; treatment is surgical where possible with follow-up anti-cancer medication.
Sertoli Cell Tumors in Dogs and Cats
Sertoli cell tumors are estrogen-secreting testicular tumors of older male dogs and cats that cause feminization, symmetrical hair loss, and a lengthened prepuce. Surgical removal of both testicles resolves most signs within months, and neutering prevents the disease.
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