Hi stranger! Signing up for MypetMD is easy, free and puts the most relevant content at your fingertips.

Get Instant Access To

  • 24/7 alerts for pet-related recalls

  • Your own library of articles, blogs, and favorite pet names

  • Tools designed to keep your pets happy and healthy

or Connect with Facebook

By joining petMD, you agree to the Privacy Policy.

Q. My dog has what seems to be a fluid filled 'lump' hanging down from the area of his ribcage. It is slightly bigger than a tennis ball.

Answered By

A. This should be checked as soon as possible to rule out a tumor and to treat as appropriate, especially at this age. A small sample can be taken with a needle to assess the underlying nature of the mass and determine the most appropriate treatment

Answered By

A. It could be a cyst, abscess, benign tumor (lipoma, etc), or possibly a malignant tumor. Have your vet take a look at it to determine the exact cause. Your vet can do a fine needle aspirate and examine the contents under a microscope to diagnose. Depending on the cause, your vet may recommend removal.

DISCLAIMER: The answers in Ask petMD are meant to provide entertainment and education. They should not take the place of a vet visit. Please see our Terms and Conditions.


Ask an expert about your unique situation now FOR FREE!

IMPORTANT: The opinions expressed in Ask petMD content area are solely those of the User, who may or may not have medical or scientific training. Our Ask petMD experts include veterinarians, vet techs, veterinary students, pet trainers, pet behaviorists and pet nutritionists. These opinions do not represent the opinions of petMD. User-generated content areas are not reviewed by a petMD veterinarian or any member of the petMD editorial staff for accuracy, balance, objectivity, timeliness, or any other reason except for compliance with our Terms and Conditions. petMD does not endorse any specific product, service, or treatment. Do not consider petMD user-generated content as medical advice. Never delay or disregard seeking professional medical advice from your veterinarian or other qualified healthcare provider because of something you have read on petMD.