I noticed no-one had replied to your post yet scruffiest so I just thought I'd give you our cancer nurses telephone number as they may be able to help with this. The number to call is 0808 800 4040 and are available Monday - Friday between 9a.m - 5p.m (except christmas eve/day, boxing day and new year's day).
Do speak with your mum's doctor or medical team as well as they will ultimately be in the best position to tell you about this and answer any other questions you may have.
