请英文高手帮我翻译一下！！谢谢

I would like to tell you all about grandma's condition. Grandma will perform cholecystectomy (removal of the gall bladder) on Tuesday afternoon because of excessive volume of gall stone. As the gall stone cannot be removed by minimal invasive surgery, an operation is therefore indispensible. However, please don't worry because the surgeon performing grandma's operation is a famous professor who has performed numerous surgeries of this kind. After grandma's has had her operation, I will write to you again to inform you of the latest situation. Please have your heart at ease!

纯手工翻译，希望对你有帮助