My Mom Diagnosed W/ Rare Form

Hello everyone, my name is carey, and I am 24 years old. My mom carolyn, is 60-something years old, and has been diagnosed with squamous-cell cancer of the lymph glands. This is a skin cancer, and so they are still trying to figure out how she got it in such a strange place. It is closing off her lymph gland at her left hip, making her leg swell from that point downward with lymphatic fluids. She is doing well considering... There is much more to the story than I am telling, but things are busy right now and I must go... I was just wondering if anyone else had heard of this kind of cancer infecting someone in such a strange place? It has my mother's doctors baffled. Thank you!