See cancer for the biology of the disease, as well as a list of malignant diseases. Oncology is a branch of medicine that deals with the prevention, diagnosis and treatment of cancer. A medical professional who practices oncology is an oncologist. The name's etymological origin is the Greek word á½Î³ÎºÎ¿Ï (Ã³nkos), meaning tumor, volume or mass.
1 An increase in maternal age affects the chances of miscarriage. 2  Women under the age of 35 yrs old have about a 15% chance of miscarriage. 3  Women who are 35-45 yrs old have a 20-35% chance of miscarriage. 4  Women over the age of 45 can have up to a 50% chance of miscarriage.
Based on statistical findings, between 10 and 20 percent of expectant mothers have a miscarriage at 5 weeks. Again, research findings indicate that most of miscarriages (about 80 percent) occur before the pregnancy is 12 weeks old.he occurrence of a miscarriage five weeks into the pregnancy may be misdiagnosed as a late period. This is because five weeks after implantation is approximately a week after the missed period.