Hi, my wife is a nurse and she was at work. She bent down to get a food tray in a lower compartment and when she stood up she Herat a pop and pain in her back left side. She went to emergency and did an X-ray and found nothing. Four days later on a ct scan they found a retroperitoneal lymphadenopathy in the aortocaval region. 16days later they did another ct scan and found metastesis cancer through her upper abdomen and a fractured eleventh left rib. Was the rib the triggering mechanism?