Could This Have Any Cancer Issues ?

1-17-10 Hi, my wife just went to her OBGYN and the DR. said, she has tissues that should not be there. My wife is 46 years young and gave birth to three kids. She has not had the peroid for two and a half years. Last check up was two years ago. She had no issues then. The doctor want to remove these tissues. My wife agree with him and they are going to do this procedure next week. Questions; 1) Why does this happen? 2) Could this have any cancer issues. ( The DR. told my wife that not to worry because she is not bleeding . ) 3) How quickly could she recover from the operation? 4) Could these tissues return again? 5) My wife is dx with Lupus could this have any reasons for these tissues. Last question; 6) Is this a common issues with women to create tissues with in the uturus area. I am not sure exactly but, it's within this area. Thank you for answering all my questions. Please respond asap. Luis A very concern Husband