Chronic leukemia: Cancer of the blood cells (leukemia) that progresses slowly. SLIDESHOW Signs of Cancer in Men: Could it Be Cancer? See Slideshow From Cancer Resources Understanding Diffuse Large B-Cell LymphomaWhat Is Mantle Cell Lymphoma?Symptoms of Progression or Relapse Featured Centers What Are the Best PsA Treatments for You?Understanding Biologics 10 Things People With Depression Wish You Knew Health Solutions From Our Sponsors Shot-Free MS Treatment Your Child and COVID-19