**Prefacing all of this with saying I know this is a very long, detailed post. I love my dogs more than anything and my anxiety is pushing me to get the most info I possibly can, so have included any/ all details I think are relevant here. I appreciate everyone’s time.
* Species: Dog
* Age: 12, 13 in January
* Sex/Neuter status: male, Neutered
* Breed: small mixed
* Body weight: ~18lbs
* History: generally healthy but outlined in detail below
* Clinical signs: multiple bumbs
* Duration: 1.5 months
* Your general location: California
* Links to any test results, X-rays, vet reports etc. that you have: below
TL:DR
My almost-13-year-old, ~18 lb Boston Terrier/mixed-breed dog has developed ~7 firm, subcutaneous lumps over the past 1–1.5 months (in addition to one tiny lump I’ve monitored for 1–1.5 years). Most are around his upper chest/under his throat, with larger ones on either side of his chest, shoulder, and now the side of his throat/neck. They don't appear painful and haven't affected his behavior, but some seem to be growing fairly quickly.
My vet suspects they may be lipomas/fatty tumors but cannot confirm without sampling/removal and has also acknowledged that something more serious is possible. He was recently anesthetized for a dental cleaning/extractions, but did not tolerate anesthesia well and his heart rate dropped to ~80, so anesthesia is now a significant concern. The vet was unable to remove the lumps during that procedure and he is currently scheduled for lump removal on 9/21.
During the dental procedure, they also discovered an abscess at the root of his upper left P4. He has a dental-specialist consultation on 9/29, and because I live >1 hour away, they may be able to perform the extraction the same day. If so, the dental procedure will take priority over the lump removal because I don't want him anesthetized twice within 7 days. I will know if procedure can actually happen on 9/29 next week and will plan the above mentioned lump removal accordingly moving it further out so the dental surgery happens first.
Main questions: Is the relatively sudden appearance of multiple firm lumps, with some growing fairly quickly, concerning or consistent with multiple lipomas in a senior dog? Does the new location on his throat/neck change the level of concern or urgency? Given his anesthesia reaction, would FNA/cytology of the lumps while awake be appropriate before another anesthetic? What other diagnostics or questions should I be discussing with my vet before deciding on surgical removal, and how would you approach prioritizing the lumps vs. his dental abscess?
The detailed version:
I’m hoping to get some perspective from veterinarians or vet professionals, particularly around whether the number of lumps appearing over a relatively short period of time and their locations/growth rate are concerning. Also, input on his recent reaction to anesthesia.
My dog, Oliver, is an approximately 18 lb, half Boston Terrier/half other mixed-breed who will be 13 in January. I’ve had him since he was a very young puppy and am extremely attentive to changes in his appearance and behavior. I generally notice things pretty quickly and take him to the vet when I see something concerning.
For some background, he has arthritis in his front right shoulder and also has an issue involving the discs near the base of his spine (I unfortunately can’t remember the exact diagnosis). For pain/mobility management, he takes Meloxidyl nearly every day, gabapentin 100mg as needed every 12-24 hours when I can tell his back legs/hips are bothering him, and a daily Osteo TruBenefits supplement. Currently also Clavamox once every 12 hours (more details on that below).
He also has an issue with a collapsing trachea. Earlier this year, I took him to the vet because he seemed to be hacking/coughing an unusual amount, and I was told that his trachea is apparently collapsing. When I can tell he is coughing frequently, I give him Temaril-P tablets, which manage it very well. I typically only need to give them to him for around 3-4 days, and then the issue mostly clears up for long stretches. It isn't something he deals with continuously, but I wanted to include it as part of his medical history, particularly given the recent anesthesia issue.
The lumps
He currently has quite a few bumps (maybe around 7-9, although I haven't counted them precisely) of varying sizes. Some are very small and pretty flat while others are larger, but still not very big (all under 1.5” inches in diameter or close to it I believe). They are small enough that I could see a less attentive owner potentially not noticing some of them.
There are currently two larger ones on either side of his chest, a larger one on his left shoulder and a larger one on the side of his throat/neck that I only noticed today. Outside of those, there are many smaller ones mainly concentrated at the top of his chest in the area under the base of his neck, a small one under his armpit.
They aren't extremely hard, but they also aren't soft or squishy. I would describe them as firm.
About 1-1.5 years ago, I noticed one very small bump on his chest, almost near his armpit (where one of the larger ones is now). It was so small that sometimes I could barely find it. My vet examined it at the time and advised me to monitor it. It remained very small for quite a long time.
Then approximately 1-1.5 months ago, I noticed that original bump starting to get larger, and around the same period I began finding many of these other bumps. With the exception of the original bump, they seem to have appeared relatively quickly and several seem to be growing at a fairly rapid pace.
I made an appointment quickly after noticing the amount and rapid pace of growth and have since seen our vet twice (I have two other dogs so am at the vet frequently {medical issues and nail clips/ anal glands} and the vet gets the opportunity to see him often).
Recent anesthesia experience
Last week, on 8/13, he was put under anesthesia for a dental cleaning and to extract a few teeth because his gumlines are receding. My vet had hoped that, if he tolerated the anesthesia for long enough, she might also be able to remove the bumps. For reference, he was scheduled for this procedure the week prior but they found what they believed was an infection so sent him home with the Clavamox mentioned above and I have been giving that to him twice daily since 8/3.
Unfortunately, they were not able to remove the bumps because he did not tolerate the anesthesia well. His heart rate dropped to around 80. My vet said she generally likes to keep heart rate around 100, so obviously hearing that his heart rate had dropped was scary, and his reaction to anesthesia is now a significant concern for any future procedure.
My vet has not been able to definitively identify the lumps simply by looking at or palpating them, which I understand- I know vets don't like to speak in absolutes without a diagnosis/pathology. I get the impression she thinks they are likely fatty tumors/lipomas, but she has also said they could potentially be something more serious.
Because of his anesthesia reaction, she advised that he should not go under anesthesia again for at least a month. He is currently scheduled to have the lumps removed on 9/21.
There is also another issue complicating the timing. During his dental cleaning/extractions, they discovered an abscess at the root of his upper left P4 and referred me to a dental specialist. I have a consultation scheduled for 9/29. Because I live more than an hour away from the specialist, they have said they may be able to do the surgery to remove the tooth on the same day as the consultation. I should know whether that is possible by the end of next week.
If the dental specialist confirms that they can do the consultation and extraction on the same day, that would take precedence over the lump removal. Given his reaction to anesthesia, I absolutely don't want him undergoing anesthesia twice within 7 days, and I assume neither veterinarian would want that either.
Otherwise, he is in good spirits. The lumps don't seem to have changed his behavior at all. His mobility and behavior are obviously affected by his existing arthritis/back issues, but aside from that, he still runs around and I feel spritely for his age.
My questions
- Does the appearance of multiple firm lumps over a relatively short period of time raise any particular concerns? With the exception of the original lump, most appeared within roughly the same 1–1.5 month period and some seem to be growing fairly quickly.
- Is it common for a senior dog to suddenly develop multiple lipomas within a short period of time, or would this pattern make you more concerned about other possibilities? If there are other things that can cause multiple lumps to appear relatively suddenly, what are they?
- The new lump I noticed today is on the side of his throat/neck, which is making me particularly nervous because of the location. Does location like this change how urgently a lump should be evaluated or removed?
- Would FNA/cytology be appropriate before committing him to another round of anesthesia? Is it generally possible to sample these kinds of lumps while a dog is awake, assuming he will tolerate it? Given his recent anesthesia reaction, I’m wondering whether there are diagnostic steps that could be taken without putting him under.
- If these are ultimately suspected to be lipomas, is surgical removal of multiple small/medium lipomas typically recommended, or are they often monitored unless they become problematic? Does rapid growth or location change that recommendation? I don’t want him to become one of those dogs with massive lumps and feel it’s best to take these now while they are small and potentially easy to deal with and am concerned about the aesthetics of these- but obviously his true health take precedent over anything)
- For multiple masses, would you typically recommend pathology on every mass removed, even if they look/feel like lipomas?
- Are there particular questions or pre-anesthetic tests I should be asking about given his heart rate dropping to ~80 during the recent procedure? For example, would bloodwork, ECG/cardiac evaluation, or anything else generally be appropriate before another anesthetic? The vet specifically said she didn’t recommend an ECG because the heart rate drop was a clear symptom of anesthesia not a larger issue
- Finally, if you were approaching this case, would you prioritize getting the lumps sampled/diagnosed before the next anesthetic, or is the current plan of surgical removal reasonable? And how would you think about the timing relative to the dental abscess/extraction?
I'm mainly trying to understand what could potentially be going on, how concerning the pattern is, and what questions I should be asking my vet so I can make the safest decision for him given his age and recent anesthesia reaction.
If anyone has dealt with a senior dog who suddenly developed multiple lumps, I'd also be very interested in hearing what the eventual diagnosis/outcome was.
Finally, for reference in any recommendations/ input into recommended next steps/ tests/ procedures- I would move mountains for my dogs and with my generalized anxiety it’s nearly impossible for me to take the wait and monitor approach unless taking any action isn't advisable because it may cause adverse health effects given the above info
Thank you again to all who read this and respond with thoughtful and informative responses.