Welcome to JustAnswer Health...and thank you for your question. I am a verified Expert and am delighted to help you today. This can be an enlarged Lymph node... or it can also be a lipoma, as your friend stated. As you may know... a lymph node can enlarge anytime there is inflammation or infection in the area. A sinus infection, a bad tooth, a sore throat , an ear infection ...can all cause an enlarged lymph node in the area you are describing. A benign enlarged lymph node is usually soft and feels like a round slightly firm ball...as opposed to cancer which is usually firm and hard. A lipoma is a benign fatty tumor. For your peace of mind I would recommend you have your Doctor take a look at it. It is most likely not concerning...but it will help you to KNOW that.