question: Hi doc, my grand mom (aged-71) was suffering from colon cancer so she has gone for surgery 4 yrs back. But now our cancer specialist says that the disease is spreading again because she gets ill very frequently and suggests us to go for chemotherapy. Also my grand mom is anemic, her hemoglobin was only 4gms (on 20/2/2014) so doctor asked us to get 2 blood bottles of blood,and now again her hemoglobin level is very low. Also she has very sever pain in right leg. I just want to know that decrease in blood level and this pain in right leg are all because of the spread of this disease again Medicines