Updated On September 23rd, 2025
Pet's info: Dog | Border Collie | Female | spayed | 9 years and 4 months old | 40 lbs
My 9 year old Border Collie was spayed May 23. For the past month she has been favoring her right rear leg. I can feel lump on her hip that is not present on her left left hip. Possibly hip dysplasia?
1 Answer
Published on July 29th, 2017
Hello! As a large breed, older dog things like arthritis and hip dysplasia are definitely on the list of possible diagnoses. The lump may be a separate issue and not necessarily related to her favoring one leg. I recommend having Spirit examined by a veterinarian to observe her gait or walk, assess her range of motion, x-rays of the hips, and assess the mass and determine whether it is a contributing factor or separate issue. Unfortunately, with masses you cannot just look at them and say what they are. Ideally a biopsy should be preformed in order to get a definitive diagnosis. Your vet can preform a fine needle aspirate of the lump, but there is a chance that the sample is none diagnostic and you will end up needing to do a biopsy anyway. Although less invasive, FNA does not provide a definitive diagnosis, as only cells are evaluated. Hopefully this was helpful. I hope Spirit gets back to felling herself.
1Pet Parents found this answer helpful
Book an appointment with the pros – our expert vets are here to help.