The no-name cancer.  Non-Hodgkin's lymphoma may not have much name recognition, but it's common and--the good news--often treatable, if not curable.
D006801:Humans; D008228:Lymphoma, Non-Hodgkin / Q000175:diagnosis / Q000188:drug therapy / Q000209:etiology / Q000235:genetics / Q000503:physiopathology