Hi. My Mom Undergo An Explore Laparotomy With End To

Hi. My mom undergo an explore laparotomy with end to end anastomosis last December 2014, she had a spinal epidural anesthesia, intraoperative diagnosis she has stage 4 colon CA and the histopath results Adenocarcinoma.3 months after the diagnosis she went for a CT scan stating that there is no metastasis and a bone scan which reveals normal.Lately she is experiencing a pain in her left buttocks radiating in her left leg which caused her of too much pain and can't sleep well.According to her she observed her left leg getting smaller.I am worried about her condition especially that she has a history of CA.Hope you can help me with this.thank you.