Nicole Karras, M.D., a pediatric oncologist at City of Hope® Cancer Center Duarte, cares for children with cancer, especially blood cancers like leukemia, lymphoma and histiocytic disorders. She also has special expertise in bone marrow transplants, which can be used to treat both cancers and non-malignant conditions. These include blood disorders such as leukemia and lymphoma, bone marrow failure syndromes and certain inherited metabolic diseases.