This LT subgroup showed significant overexpression of PD-L1 suggesting high PD-L1 expression in thyroid tumors with coexisting chronic lymphocytic or Hashimoto's thyroiditis need to be interpreted with caution to avoid overdiagnosis and overtreatment of benign thyroiditis lesions [41, 42]. The gene discussed is CD274; the disease is B-cell chronic lymphocytic leukemia.