Hi, Thanks for writing in. Cells are of many types and cell differentiation is a method by which we can tell normal cells from and abnormal one. The normal cell is called well differentiated and regular. When there is cancer, the cells become less differentiated due to increased abnormal activity and is called poorly differentiated. This is a pathological observation and the real staging is by the appearance of the tumor, its measurement, spread to adjacent structures and involvement. Cancer is one of the conditions that requires a slightly long term treatment of months to years and in early stages it is curable in most patients. Please take things one step at a time and encourage your husband to fight his battle with cancer in the best way possible. Get him treated at a cancer hospital with specialist treatment options. He might require surgery, chemotherapy and radiation to control the disease. You have to be his constant support during his treatment and after that. Please do not worry.