my brother has a lump painful lump on his right foot near the ankle but lower, closer to his toes. He does not remember hurting his foot. It s a little red, and swollen, big toe feels a little swollen. Could this be a blood clot, should he go to emergency to have them look at it? He has Celiac Disease and takes a Thyroid Med. He is 65 yrs old. Please let me know if he should go to hospital, thank you.