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.
The below data would brief you on the lymph nodes locations in body, and then some more information about the working of the immune system. Where Are the Lymph Nodes Located in the Body? There are about 500-600 lymph nodes that are located in the body, as different places such as neck, collarbone, armpits, and groin.