What does invades the right psoas muscle and enters neural mean?

The right psoas muscle is a deep muscle located in the lower back. It arises from the lumbar spine and inserts into the lesser trochanter of the femur, helping to flex the hip joint and rotate it externally. The muscle is innervated by the lumbar plexus, a network of nerves that originate from the spinal cord in the lower back. The lumbar plexus gives off the femoral nerve, which runs through the right psoas muscle and innervates the muscles of the thigh, including the quadriceps and the hip adductors.