causes,c16.3,described,c16.1,diagnosis,c16.9,questions to ask,c16.26,recurrence,c16.25,risk factors,c16.6,screening,c16.7,spread,c16.2,symptoms,c16.8,treatment,c16.13,types,c16.2,causes,c17.3,diagnosis,c17.7,follow-up,c17.16,questions to ask,c17.18,recurrence,c17.17,risk factors,c17.4,screening,c17.5,spread,c17.2,symptoms,c17.6,treatment,c17.9,types,c17.2,