Just noticed a knot lump like growth in my groin area where my pelvic bone and upper inner thigh meet the knot is an inch long what is it ?

Inguinal knot: There are a few possibilities. It could very well be an enlarged lymph node. This usually happens when we become ill or have a urinary or sexually transmitted disease. Another possibility is an inguinal hernia. Questions to answer are is there fever? Pain? When does the pain come on? Go away? Any other infectious symptoms? I would see your doctor for a complete examination. Hope that helps