A 39-year-old man was admitted to our department with a 1-day history of pain in his left flank and dizziness. His medical history included poorly controlled diabetes mellitus and a stone in the left upper ureter. On admission to the hospital, he appeared to be in septic shock. His temperature was 38·1°C and his blood pressure was 66/35 mm Hg. Laboratory investigations showed a leucocytosis of 16·58 × 109 per L with 93·6% neutrophils. His renal function was abnormal: blood concentrations of creatinine and urea nitrogen were 0·499 mg/dL and 15·4 mmol/L, respectively. He was hyperglycaemic with a blood glucose concentration of 24·7 mmol/L. Department of ErrorZhong D, Yi Y, Lin C. A kidney changes size: first increasing and then decreasing. Lancet 2019; 393: 1641—In this Clinical Picture, the authors' affiliation and corresponding author's address have been corrected to “Department of Urology, Longyan First Hospital Affiliated to Fujian Medical University, Longyan 364000, China”. These corrections have been made to the online version as of May 9, 2019. Full-Text PDF