From "The Emperor of all Maladies"
Although there are hundreds of different types of cancer, malignancies generally fall into five basic categories: carcinomas, sarcomas, myelomas, lymphomas, and leukemias.
Carcinoma – cancer that begins in the skin or in tissues that line or cover internal organs. There are a number of subtypes, including adenocarcinoma, basal cell carcinoma, squamous cell carcinoma, and transitional cell carcinoma
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