Jeffrey S. Klein, MD, Editor of RadioGraphics, discusses five articles from the January-February 2019 issue of RadioGraphics. ARTICLES DISCUSSED: Connective Tissue Disorders in Childhood: Are They All the Same?, RadioGraphics 2019; 39:229-250; Leukemic Involvement in the Thorax., RadioGraphics 2019; 39:44-61; Perfusion Scintigraphy in Diagnosis and Management of Thromboembolic Pulmonary Hypertension., RadioGraphics 2019; 39:169-185; Adult Leukodystrophies: A Step-by-Step Diagnostic Approach., RadioGraphics 2019; 39:153-168; Selective Chemoembolization of Caudate Lobe Hepatocellular Carcinoma: Anatomy and Procedural Techniques., RadioGraphics 2019; 39:289–302; Overcoming Human Barriers to Safety Event Reporting in Radiology., RadioGraphics 2019; 39:251-263.