The lymph nodes in the groin, also known as inguinal lymph nodes, are small, bean-shaped structures that are part of the lymphatic system. They are located in the inguinal region, which is the area of the body where the thigh meets the torso. The inguinal lymph nodes are responsible for filtering lymph, a clear fluid that circulates through the body and helps to fight infection and disease.The inguinal lymph nodes can be found on both sides of the body, in the area where the thigh meets the pelvis. They are located deep within the inguinal region and are not visible from the outside of the body. In addition to the inguinal lymph nodes, there are also superficial inguinal lymph nodes, which are located closer to the surface of the skin in the inguinal region.Lymph nodes in the groin can become swollen and painful when the body is fighting an infection or disease, such as a urinary tract infection, a sexually transmitted infection, or cancer. Swollen inguinal lymph nodes may also be a symptom of a more serious condition such as lymphoma. If you suspect that you have swollen inguinal lymph nodes, it is important to seek medical attention.The doctor will perform a physical examination, including a lymph node examination, to check for any swollen or tender lymph nodes in the groin. They may also order imaging tests such as an ultrasound or a CT scan to further evaluate the lymph nodes. If cancer is suspected, a biopsy of the lymph node may be performed to confirm the diagnosis.Overall, the inguinal lymph nodes are small but important structures that are located in the groin area. They play a crucial role in the body's immune system and can help to fight off infections and diseases. It is important to be aware of any changes in the inguinal region and seek medical attention if you notice any swelling or pain in the lymph nodes.