What is the CLL??

Dear Dr. my mother was diagnozed with CLL I would like to know what is the CLL how does it appere? is there anything to do?? is there any other site that I can get mor information about it?? I read Hebrew thank you

CLL = chronic lymphocytic leukemia יש הרבה מידע בנושא זה ברשת למשל http://www.nlm.nih.gov/medlineplus/ency/article/000532.htm או http://www.leukemia-lymphoma.org/all_page.adp?item_id=7059 העזר בגוגל