
What Is The Cause Of A Lump In My Neck?

Thanks for your query.
As far as the lump on the side of your neck the first thing we think of is of course a lymph node. Most swollen lymph nodes are reactive - meaning they swell in reaction to a virus or some kind of infection or even an allergen which triggers an inflammatory response.
These types of reactive nodes can sometimes persist for a few months before slowly resolving and is the most likely cause of what you have going on. Another possibility could be a simple fluid filled cyst or sebaceous cyst. These also typically persist for a number of weeks before slowly resolving on their own.
In light of the fact that you have a history of breast cancer it is worthwhile to bring this to the attention of your physician so that it can be monitored.
Regarding your cancer history can you give me a bit of detail as to which breast was affected, if lymph nodes were examined at the time of surgery and what therapies you had following the surgery.
I thank you again for submitting your question. I hope you have found my response to be both helpful as well as reassuring. If you have any additional concerns regarding this issue I would be happy to address them and I look forward to the additional information you can provide regarding your breast cancer history.
Sincerely,
Dr. Galamaga

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