Profound hyperlipidaemia due to concomitant diabetes and hypothyroidism

A previously well 5-year-old girl presented with new onset type 1 diabetes mellitus and diabetic ketoacidosis, and was found to be profoundly hyperlipidaemic. Further investigations showed that she had associated hypothyroidism. She responded to insulin and L-thyroxine treatments and her lipid profile returned to normal 2 months after diagnosis. Despite starting anticoagulant therapy early, she developed deep vein thrombosis of the lower limb. …