My husband is 70 years old and has severe cerebral atrophy caused by a brain disease that started 12 years ago. He was treated for 2 years with Cytoxan and improved some. One year ago he was diagnosed with non-Hodgkin s lymphoma and received 4 weekly treatments of Retuxan and then 3 quarterly treatments. In January it was discovered that he is J.C. Virus positive so they have now stopped the Retuxan. Neither his oncologist or neurologist want to approach the subject of life expectancy but it would be nice to have an estimate. Sometimes it seems that they are surprised he is still alive. He is mentally active but has little to know energy. Are there any tables on life expectancy for someone in this situation?