My dad was diagnosed with lung cancer 4 weeks ago and we were told it has reached his bones and lymph nodes as well as his lungs, he has been giving 12 fractions of Radiotherapy and seemed to be doing quite well. Today however he is finding it very hard to move his legs and now he is starting to think the cancer is in his legs.. I really don;t think this is the case and wondered could the Radiotherapy have something to do with this. Mum mum was also diagnosed with Breast Cancer just before my dad, so we are having a terrible time at the moment. I hope someone can help and let me kow if this has happened to them..