Lymph nodes are located in groups, and each group drains a specific area of your body. You may be more likely to notice swelling in certain areas, such as in the lymph nodes in your neck, under your chin, in your armpits and in your groin.
Swollen Lymph Nodes. When there’s a problem in your body, like an illness or an infection, your lymph nodes can swell. (This usually happens only in one area at a time.) It’s a sign that more lymphocytes are in action than usual, trying to kill off germs. You may notice this most often in the glands in your neck.
An axillary lymph node dissection (ALND) removes lymph nodes from the armpit. An inguinal lymph node dissection removes lymph nodes from the groin. A neck dissection removes lymph nodes from the neck (also called cervical lymph nodes).This diagram with labels depicts and explains the details of Where Are The Lymph Nodes.