Perineum cancer vs Peritoneal Cancer are Theses the same ? what are treatments and survival rate

Today I found out that my 31 year old daughter inlaw has Perneum cancer, last week she had a 7 & 4 inch tumors removed, as you know this is devestating to our family, Ive been trying to look up information and wanted to know if Perineum cancer is the same as Peritoneal cancer as they seem to be mentioned the same, also what re treatments and survival rate on this type of treatment

Thank yo for any information you can supply

Dave