Carcinoma: Cancer that begins in the skin or in tissues that line or cover body organs. Examples are carcinoma of the breast, colon, liver, lung, pancreas, prostate, or stomach. From Cancer Resources 12 Tips for Patients: Prostate CancerHER2+ Diagnosis: What to ExpectTreatments for HR+/HER2- Breast Cancer Featured Centers What Are the Best PsA Treatments for You?Understanding Biologics 10 Things People With Depression Wish You Knew