If you do not sign up for Medicare Part B when you are first eligible, you may need to pay a late enrollment penalty for as long as you have Medicare. Your monthly Part B premium could be 10% higher for every full 12-month period that you were eligible for Part B, but didn't take it.
The human body contains lymph nodes throughout, primarily in the head and neck, but also under the arms and in the groin. The lymphatic system consists of lymph nodes along with a number of organs and vessels. Keep Learning.
1. Know where the lymph nodes are located. You have the highest concentration of lymph nodes in your neck, around your collarbone, in your armpits, and in your groin. 1  Lymph nodes are present in groups, and are about the size of a pea or bean.2  Lymph nodes located in the groin are also called inguinal lymph nodes.. Know where the lymph nodes are located. You have the highest concentration of lymph nodes in your neck, around your collarbone, in your armpits, and in your groin. 1  Lymph nodes are present in groups, and are about the size of a pea or bean.