Welcome to Justanswer! I am Dr. Altman and happy to assist you both today!
I am so sorry to hear that your senior friend has this lump. It is great that it is not ulcerated or angry and she is eating well. Depending on where the lump is it likely is not painful but may hinder movement (such as in the groin or armpit). Unfortunately there are no medications to remove these types of lumps only surgery is an option to get them taken care of
First and foremost, in order to determine if they are benign (noncancerous) lumps versus malignant (cancerous) lumps is to have your veterinarian evaluate and aspirate (poke with a needle) the lumps to evaluate the material under the microscope
This is really the only way to differentiate the concerning from the non concerning lumps definitively because a cancerous versus a noncancerous lump can appear identical on presentation
Evaluation under the microscope will be looking at the lump at a cellular level. Do the cells look normal, is it sebaceous or oil material that is benign or even fatty material indicating a lipoma or are the cells abnormal in appearance? This information is critical in order to diagnose the lump origin and whether it should be removed sooner versus later
Some tell tale signs that a lump might be more of a concern include whether it is rapidly growing, it is bothersome (scratching, licking), it is not easily picked up from the underlying tissue indicating it is attached to the muscle layer. This can be helpful but not 100 % definitive as a fine needle aspiration would be
I always advise photographing the lump with a ruler or coin next to the lump to measure the size weekly or in dark skinned dogs where it is not as readily viewable measuring with a ruler on a regular basis
Please let me know if this information makes sense and any additional questions I can assist with today. I understand not wanting to consider anesthesia to remove the lump at her age but diagnosing what type of mass it is will give piece of mind that it is not painful nor cancerous but regardless there will be no medications that will resolve a lump, especially one this size...
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