According to research papers I’ve read on use of mepitel , it can be used on lumpectomy or mastectomy patients. I can see how it may adhere better to a flat chest wall post mastectomy easier than breast tissue post lumpectomy BUT I will be arguing I’m prepared to fiddle and persevere with it if that’s what they say to me on first my radiation appointment ( and I’ll purchase my own if need be). The benefits ( protecting from radiation. burns) far outweighs the disadvantages from what I’ve read and seen so,far.