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.
Quick Answer. Most lymph nodes are located in the head, neck, armpits and groin area, explains Mayo Clinic. There are hundreds of these nodes in the body located in other regions such as the joints, elbows and knees and around the lungs and bowels, states the American Cancer Society.