It can be a boil, cyst or a swollen lymph node. Lymph nodes are small (1-2cm) and bean-shaped nodes. They are very important to your body keeping you healthy. Lymphadenopathy (swollen lymph nodes) is usually caused by a viral, fungal or bacterial infection.
It is very difficult to precisely confirm a diagnosis without examination and investigations and the answer is based on the medical information provided. For exact diagnosis, you are requested to consult your doctor. I sincerely hope that helps. Take care and please do keep me posted on how you are doing.