Hi.
Your mammogram showed a mass on the right breast. An ultrasound of the breast may be needed in order to differentiate between a solid mass and a cystic mass. An excision biopsy or a core needle biopsy may be done in order to have a more definite diagnosis.
Good luck.
An intramammary lymph node, unless it's a very abnormal looking one, is a benign finding that requires no follow up. Most people have intramammary (in the breast) lymph nodes. So, in other words, if it turns out to be a lymph node, that's a very good thing.
Not necessarily; there are many, many lymph nodes throughout our bodies. There serve a very valuable function. Have your additional views or whatever is recommended before you get too upset about this report.