HHV-6 has been detected in lymphomas, leukemias, cervical cancers, and brain tumors. Other common causes include lung cancers and tuberculosis. Overall, they metastasize more frequently than epithelial ovarian cancers. The vast majority of colorectal cancers are adenocarcinomas. Melanoma are the least frequent of the three common skin cancers. Symptoms and signs are as for other lung cancers. The risk for development of non-melanoma skin cancers is also increased. There is an association between celiac disease and an increased risk of all cancers. Testicular teratomas represent almost half of testicular cancers. McCain was a survivor of previous cancers, including melanoma. It is a classification system of the anatomical extent of tumor cancers. Smad4 is inactivated in nearly half of all pancreatic cancers. Adenocarcinomas account for approximately 40% of lung cancers. Other disorders include a number of infections and cancers. NSCLC accounts for about 85% of all lung cancers.