My cat has a lump on her neck – could it be the microchip?


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Our question this week was:

Dr. Debra - My cat has a microchip. She has a small lump (pea size) under her neck. Could this be the chip? I thought I read something about chips and tumors.

Debbie Taysom


Hi – thanks for your email Debbie. You wrote that your cat has a lump on the under size of her next the size of a pea and you wonder if it could be the microchip. It is possible but most microchips are over the back or can migrate down the sides of a cat. I'd recommend having your cat scanned to see if this helps determine the location of the chip. Also, an x-ray will tell the presence and location of a chip.

We did some research on if microchips cause tumors – you may really like to read this article. Go to: Do Microchips Cause Cancer?

Best of luck!

Dr. Debra

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About The Author

debra-primovic Dr. Debra Primovic

Debra A. Primovic, BSN, DVM, Editor-in-Chief, is a graduate of the Ohio State University School of Nursing and the OSU College of Veterinary Medicine. Following her veterinary medical training, Dr. Primovic practiced in general small animal practices as well as veterinary emergency practices. She was staff veterinarian at the Animal Emergency Clinic of St. Louis, Missouri, one of the busiest emergency/critical care practices in the United States as well as MedVet Columbus, winner of the AAHA Hospital of the year in 2014. She also spends time in general practice at the Granville Veterinary Clinic. Dr. Primovic divides her time among veterinary emergency and general practice, editing, writing, and updating articles for, and editing and indexing for veterinary publications. She loves both dogs and cats but has had extraordinary cats in her life, all of which have died over the past couple years. Special cats in her life were Kali, Sammy, Pepper and Beanie.