hi thanks for posting your query.i feel extremely sorry for your friend as she has gone through a lot of complications since her cancer colon has been diagnosed.
stage 4
colon cancer suggests disseminated ,widely spread colon cancer throughout the abdomen and beyond meaning it has involved various organs and
lymph nodes.this stage is beyond cure .certain measures called palliative measures can prolong the life of the patient.she is currently experiencing MALIGNANT ASCITIS(fluid in the abdomen),malignant
intestinal obstruction,for which she is currently dealt with a metallic stenting plus instent
chemotherapy.now currently she is experiencing pain in her hip which is most likely as result of side effects of chemotherapy,this could possibly be "AVASCULAR NECROSIS".this can also arise from spread of cancer to
vertebral and hip bones.with progressing metastasis she continues to have this fluid accumulation in the abdomen,unresolving pain in the stomach.as per your doctor's advice radiotherapy can be an option with improving results,but it not curative.
so i would like to conclude that stage 4 colon cancer is associated with a very poor outcome no matter what the treatment protocols be ,as the condition of the patient keeps on dropping.only palliation can prolong the life to some extent.but the average life span would be around 6 months with palliation.
thank you.