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What are mast cell tumors in cats?

A mast cell tumor (MCT) originates in the mast cells, which are found in the skin and body organs. They can mainly affect your cat's skin and digestive system.

Mast cell tumors of the skin are not so common in cats compared to dogs, probably more common in certain breeds like Siamese and in older cats. They often look like hairless, small, firm bumps or lumps on the skin.

MCT affecting the spleen and the intestine are also relatively common in cats and these type of MCTs are more common in cats compared to dogs.
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askPurrch information is provided for educational purposes only. Please consult your veterinarian with any questions or concerns you might have regarding your pet’s specific nutritional or health needs. Always ask your veterinarian before feeding your pet anything new.
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Pet Poison Control Hotline
A consultation fee may apply

ASPCA Animal Poison Control: (888) 426-4435

Pet Poison Hotline: (800) 213-6680

Important side note
on pet toxicities

During COVID, as people introduced new substances into their homes, such as baker’s yeast, paint, and vitamin D3, pet poisonings notably increased. Keep your pet safe by avoiding these highly toxic household products.

  • Over-the-counter drugs of all sorts (painkillers, cold medications, dietary supplements, etc.)
  • Insecticides
  • Household plants
  • Household cleaners (including hand sanitizer)
  • Heavy metal including lead, zinc and mercury
  • Fertilizers and other garden-related products
  • Automotive chemicals including antifreeze which is one of the most highly poisonous substances
Pet Poison Control Hotline
A consultation fee may apply

ASPCA Animal Poison Control: (888) 426-4435

Pet Poison Hotline: (800) 213-6680

Important side note
on pet toxicities

During COVID, as people introduced new substances into their homes, such as baker’s yeast, paint, and vitamin D3, pet poisonings notably increased. Keep your pet safe by avoiding these highly toxic household products.

  • Over-the-counter drugs of all sorts (painkillers, cold medications, dietary supplements, etc.)
  • Insecticides
  • Household plants
  • Household cleaners (including hand sanitizer)
  • Heavy metal including lead, zinc and mercury
  • Fertilizers and other garden-related products
  • Automotive chemicals including antifreeze which is one of the most highly poisonous substances